(((((hugs))))) I'm not surprised you feel distracted. I think you're reacting really well- I'm sure if I was in your shoes I'd be screaming and wailing.
I don't know about finding the time to make more memories. it's so difficult, but reading your last two sentences, I had a thought. Would it be a 180 (or sorts) to just agree with H when he says you guys have nothing in common and that it won't ever work? I'm just thinking of a situation in DR where the H was really angry about something, so instead of trying to soothe him, his W got equally angry (maybe even more so), and her H reacted by calming down and soothing her. Perhaps agreeing with him and saying the same stuff back to your H might give him a bit of a jolt?
Just a thought.......I hope the studying is going OK.