DH's sex drive has fallen off a cliff. We used to have sex about once a week, he may have liked more but we were fine with that, happy. About four months ago we just seemed to stop having sex, or it reduced to about once a month/six weeks. When we do have sex it seems hard for him to mantain an erection, although I do sometimes hear him wanking in the bathroom in the middle of the night, so I think he wakes up in the night with one. This never happened before.
Everything else in the relationship seems fine to me, he's still nice to me, loving, but I worry maybe he doesn't love me/fancy me anymore. I fear that if we don't start having sex again it might endanger our marriage. I want our sex life back but even more than this I don't want to loose him. I would rather be in a sex less marriage with him than a sex filled relationship with somebody else.
Any advice please?