OW seems sufficiently screwed up and love avoidant that I don't think she will apply any pressure. I think thats even half the reason he likes spending time here and WOULDN'T want to have to move in with her. Living together probably would freak her out (and maybe him too), but they can be part time infatuated lovers indefinitely with ample time to miss each other in between.
me-35 WAS-37 T-16 1/2 Son-14 (HF Aspergers) BD,ILYBINILWY,"I met my soulmate": Oct5,2013 "Letting go because I love him, holding on because I love him."