...man, I can just hope she just looked, got too embarrassed to do anything, then threw him to the sofa after regretting her decision.
Anything more and...well, even if he's supposed to be mentally older than her by years he's been conscious, non-consensual access is still non-consensual access, and kind of a red flag.
Not that the series isn't kinda predicated on it, but it'd expect them to get a bit closer before she starts pulling the "and then I did some things to your body when you went to sleep".