I suffer from PTSD from a horrible childhood and my sex life is great. When I have a boyfriend all I want to do is have sex with him. When I was with my ex-fiance we had a great sex life. We were having sex 3 or 4 times a day. I don't know if PTSD is the problem here. I think it may be more of may be is not interested in having sex anymore. I am not saying your ugly or anything cause I don't know you but may be in his head you have lost your sex appeal men are crazy like that. I will reccomend maybe trying a new postion or something to peak his interest. Watch a porn with him see what those girls are doing to the guys on there and than try them on him. I am against porn but I did watch it once with my ex fiance and I will tell you it did help our sex life for a little while. The porn gave me new ideas and helped to start the process of us having sex. When you watch it with your partner it gets you both in the mood and than the sex is so much better. I am trying to help by telling you things that helped keep us together for almost 3 years til we broke up in Feburary of this year. Trust me watching a porn with your man can do wonders for your sex life.