he should just say so and change his relationship status to "in relation". but i don't like him lying about it.
You should not make big deals of "whose these women are?" I never question my hu*****and's FB friends. Some of them I know, and most of them I don't. no big deals. they all see how frequently my hu*****and post our son's pictures and family activities.
If you bf post a lot of activities of you two, include some pictures of you, you should not worry or question. if he posts stuff like a single guy, then you should question what's going on.