I was LD for a long period of time in part due to a miserable 1st marriage. When my SD did come back it wasn't for my husband (long, ugly story). I never had an affair or anything close but just didn't care to share my sexuality with my H. I'm not saying that this is the case with your W. I am the HD partner in this M and have been through four years and a new baby (15 months old). I do think it has to do with my current H being a good man and overall a good H. I also think that it has a lot to do with my maturation. I finally learned to be sexual for my own reasons (not just to keep an immature, verbally abusive man happy). I finally accepted that I am sexually attractive even if I'm not an actress or model.
My current issue is with getting my H to communicate sexual interest, needs etc... better. My current H is anxious about sex, has a lower drive than I do and let's too much of life get in the way. Remarkably, I could have said all of that about myself when I was LD.
For what it is worth if you and your W are religious at all many people have found world wide marriage encounter weekends to be renewing and helpful to their marriage. People who aren't Christian often find the Christian aspect a little much.