We have been married for 20 years now and we have one 7 yr old daughter. We have been sexless for 12 of the 20 years (two 6 year periods). I am not in love my wife and haven't been since almost the beginning of our marriage. When I met my wife I haven't had a date in 3 years and was very lonely. Guess I took the first woman that showed any interest in me. We did have a lot in common but in hindsight I think she should have been just a good friend and not a wife.
I feel guilt because she loved me so much and I pretended to love her that much too, but I actually didn't. I wanted to feel love like she did for me, but no matter how I hard I tried it didn't happen. I wanted to feel it so bad that I had an affair, and fell in love with my AP. This was 7 years ago. I still talk to my ex-AP from time to time.
I don't leave because I am feeling guilty for being dishonest with my wife and myself for all those years. I feel I own my wife too much to leave.