Most people when they marry feel they have to stop doing all the things they used to because they are now married. What you were used to was why you fell in love with him, and since then he hasnt fulfilled your needs as you have needed. Now the weight is just another issue coupled with some resentment for him not fulfilling your needs. You need to express to him in ways that you are not fulfilled and need more from him. On the other side you have to fulfill his needs of love and by doing that he will return the love you need.