Im kind of going through a similar situation. you can read " Help getting my wife back".

But I wouldnt say give up on him if you raelly love him, but let him figure out what he wants. Maybe start small and rebuild your relationship. Start with dates and stuff.

Start talking. There is obviously something missing, you need to find out what it is taht is missing and try to bring it back.

The problem with today's society is people just run away and divorce is always the easy answer. I guess Im old fashion and think you shoudl do everything you can to work on the problems together. And Im realizing more and more each day what it really takes to make a marriage work.
I myself just need a chance with my wife for her to see that I want it to be different, but I want her to work together with me instead of running away.