I am happy to hear that your wife has received a nulity of her previous marriage and she wishes to return to the full Sacramental life in the Church. I am also pleased to hear that you wish to accommodate her in this. The convalidation of your marriage is very important for both of you, not just for her.
In the eyes of God she was still married to her first husband while married to you. That placed you both in a state of sin (of adultery). The Church declaring her first marriage Null means that she was never married Sacramentally and thus is single and eligible to marry you. This is what the convalidation will do.
The convalidation must go forward or it will risk the soul of your wife, and yours.
As for whether your wife loves you, that is an altogether different issue. The convalidation can proceed regardless of whether or not she loves you.
In fact, the convalidation does not require a repeat of the marriage ceremony and the exchange of vows. The marriage can be convalidated by radical sanation. According to Canon Law 1161:1 "The radical sanation of an invalid marriage is its convalidation without the renewal of consent".
In other words, the convalidation of the marriage can be done on paper instead of in ceremony. In fact, your wife could convalidate the marriage by radical sanation without you even knowing about it according to Canon Law 1164.
So convalidation of your marriage should not be a problem. Please go forward with it as soon as you can so that your marriage will be blessed.
Now, let us discuss the notion that your wife may not love you. We must remember that genuine love is not a "feeling" but an action. 1 Corinthians 13:4-7 gives the pure definition of love:
Love is primarily something one does, rather than something one feels. This does not mean there is no emotional element, rather it means love stands on the foundation how we act toward one another.
We must also remember that the feeling of being loved is often different for men and women. You and your wife need to sit down and talk with one another to discover what help each other feel loved by the other. Once you find out your wife's "love language" and she finds out your "love language" you both may begin to feel the love that you long for. There is a good book that details what I am talking about...
From the book, The Five Love Languages: How to Express Heartfelt Commitment to Your Mate by Gary Chapman
"We must be willing to learn our spouse's primary love language if we are to be effective communicators of love." p. 14
The basic premise of this book is that each spouse needs to identify his and her primary love language, and share it with the other. A big clue to a person's primary love language can be found in how that person demonstrates love to others. For example, a spouse whose love language is touch tends to express love by touching, and feels loved when touched. Once the love languages are identified, each spouse should make an effort to express love in that person's primary love language.
Here's a brief description of each love language:
Words of Affirmation
Mark Twain once said "I can live for two months on a good compliment." Verbal appreciation speaks powerfully to persons whose primary Love Language is "Words of Affirmation." Simple statements, such as, "You look great in that suit," or "You must be the best baker in the world! I love your oatmeal cookies," are sometimes all a person needs to hear to feel loved.
Aside from verbal compliments, another way to communicate through "Words of Affirmation" is to offer encouragement. Here are some examples: reinforcing a difficult decision; calling attention to progress made on a current project; acknowledging a person's unique perspective on an important topic. If a loved one listens for "Words of Affirmation," offering encouragement will help him or her to overcome insecurities and develop greater confidence.
Quality Time
Quality time is more than mere proximity. It's about focusing all your energy on your mate. A husband watching sports while talking to his wife is NOT quality time. Unless all of your attention is focused on your mate, even an intimate dinner for two can come and go without a minute of quality time being shared.
Quality conversation is very important in a healthy relationship. It involves sharing experiences, thoughts, feelings and desires in a friendly, uninterrupted context. A good mate will not only listen, but offer advice and respond to assure their mate they are truly listening. Many mates don't expect you to solve their problems. They need a sympathetic listener.
An important aspect of quality conversation is self-revelation. In order for you to communicate with your mate, you must also be in tune with your inner emotions. It is only when you understand your emotions and inner feelings will you then be able to share quality conversation, and quality time with your mate.
Quality activities are a very important part of quality time. Many mates feel most loved when they spend physical time together, doing activities that they love to do. Spending time together will bring a couple closer, and, in the years to come, will fill up a memory bank that you can reminisce about in the future.
Whether it's sitting on the couch and having a brief conversation or playing together in a tennis league, quality time is a love language that is shared by many. Setting aside focused time with your mate will ensure a happy marriage.
Receiving Gifts
Some mates respond well to visual symbols of love. If you speak this love language, you are more likely to treasure any gift as an expression of love and devotion. People who speak this love language often feel that a lack of gifts represents a lack of love from their mate. Luckily, this love language is one of the easiest to learn.
If you want to become an effective gift giver, many mates will have to learn to change their attitude about money. If you are naturally a spender, you will have no trouble buying gifts for your mate. However, a person who is used to investing and saving their money may have a tough time adjusting to the concept of spending money as an expression of love. These people must understand that you are investing the money not in gifts, but in deepening your relationship with your mate.
The gift of self is an important symbol of love. Sometimes all your mate desires is for someone to be there for them, going through the same trials and experiencing the same things. Your body can become a very powerful physical symbol of love.
These gifts need not to come every day, or even every week. They don't even need to cost a lot of money. Free, frequent, expensive, or rare, if your mate relates to the language of receiving gifts, any visible sign of your love will leave them feeling happy and secure in your relationship.
Acts of Service
Sometimes simple chores around the house can be an undeniable expression of love. Even simple things like laundry and taking out the trash require some form of planning, time, effort, and energy. Just as Jesus demonstrated when he washed the feet of his disciples, doing humble chores can be a very powerful expression of love and devotion to your mate.
Very often, both pairs in a couple will speak to the Acts of Service Language. However, it is very important to understand what acts of service your mate most appreciates. Even though couples are helping each other around the house, couples will still fight because the are unknowingly communicating with each other in two different dialects. For example, a wife may spend her day washing the cars and walking the dog, but if her husband feels that laundry and dishes are a superior necessity, he may feel unloved, despite the fact that his wife did many other chores throughout the day. It is important to learn your mate's dialect and work hard to understand what acts of service will show your love.
It is important to do these acts of service out of love and not obligation. A mate who does chores and helps out around the house out of guilt or fear will inevitably not be speaking a language of love, but a language of resentment. It's important to perform these acts out of the kindness of your heart.
Demonstrating the acts of service can mean stepping out of the stereotypes. Acts of service require both mates to humble themselves into doing some chores and services that aren't usually expected from their gender. However, these little sacrifices will mean the world to your mate, and will ensure a happy relationship.
Physical Touch
Many mates feel the most loved when they receive physical contact from their partner. For a mate who speaks this love language loudly, physical touch can make or break the relationship.
Sexual intercourse makes many mates feel secure and loved in a marriage. However, it is only one dialect of physical touch. Many parts of the body are extremely sensitive to stimulation. It is important to discover how your partner not only physically responds but also psychologically responds to these touches.
It is important to learn how your mate speaks the physical touch language. Some touches are irritating and uncomfortable for your mate. Take the time to learn the touches your mate likes. They can be big acts, such as back massages or lovemaking, or little acts such as touches on the cheek or a hand on the shoulder. It's important to learn how your mate responds to touch. That is how you will make the most of this love language.
All marriages will experience crisis. In these cases, physical touch is very important. In a crisis situation, a hug can communicate an immense amount of love for that person. A person whose primary love language is physical touch would much rather have you hold them and be silent than offer any advice.
It is important to remember that this love language is different for everyone. What type of touch makes you feel secure is not necessarily what will make your partner happy. It is important to learn each other's dialects. That way you can make the most of your hugging, kissing, and other physical contacts.
I hope this help you and your wife to rekindle love for one another. With the convalidation and this renewal of love that can happen once you understand each other's love language you may begin your marriage anew.