Why on earth is Bob such a damn likable dude? Sure, he's got his kink going on and he's definitely no looker (to put it mildly), but I don't think we know if he's actually cheating and all of his interactions are straight chill, even regarding his relationship trouble.
Seriously, I'd have mixed feelings about banging Linda's brains out, but weirdly I think he'd be into it if he actually knew about it, but Bob being Bob sorta locks out the French twin route for me. Wish there was an option to narc on them and see what he'd do with the information.