I think sex should be a mutual thing, but there are times when one of the partners are just not in the mood or are tired, especially if they suffer from depression. I sometimes don't feel like having sex, and my husband doesn't pressure me into it. I do worry sometimes if i don't give him sex he will look elsewhere but he says he doesn't mind my situation, meaning my mental illness. I do have to say i sometimes have sex because i feel obligated, and in the end i am happy i did have sex with him afterards because i feel rejuvinated .