How come? How to? 2 questions in 1?

I havent had with my husband but once for over a month due to some marital problems we "were" having. Well you see my problem is..is that he thinks that I dont want to..But I do. Its bugging me..all the times he wanted to have prior to...he would well be a typical man and grope me etc...Hes not anymore, and Im not sure how to take this. Is he not doing it out of respect for how he thinks I feel, Or because of something else. Oh, and the one time we had , "lets just say that he had ..not me". Is this some type of role reversal..sheesh this sucks, if this is how he felt everytime I turned him down prior. I just wanna get off work in the morning and go home and ravish him...but me being me...why am I afraid of how hes going to react to that. We have kids so our...limits are kinda boundried to the bedroom..if ya know what I mean. What should I do?