If he's MB'ing for his release then he doesn't have to put that energy towards you. It's my guess he has some major trust issues towards you. MB'ing means he doesn't have to be intimate with you, doesn't have to be vulnerable at all...he can give you the attention he feels comfortable with at this time.
Oh and no...men can't just close their eyes and have sex with anyone who is there (at least I wouldn't generalize that...I'm sure some can.) I've known at least two men in my life whose emotions were attached to making love with a woman....I'd even stretch that to say 3 men (including my own husband). Don't let that misperception that men need sex just for the physical release mislead you.
