Polyrhythm

It'd be a total betrayal of the progress Ben has made this year and kind of to how the whole SA, ED and intimacy issues fallout was handled (barely in the latter case) too. I could see a lazy handwave writer's out being Johnny seeing Ben as he was and not as he is and Ben finding something in that, but Ben did not even like that version of himself and literally just spoke about feeling like things are getting back to the way they should be/wants them to be like two weeks ago.

It'd also realistically be a betrayal too far for Callum, who has put up with a lot as is. Not that he's entitled to physical intimacy ultimately either but like... Defining Red Flag if there was a cheating moment after that conversation?

Not going to even entertain that it's a distraction for a Johnny/Callum affair that drives Ben off because that would totally immolate who Callum is supposed to be and break Ben utterly as a character if he's ever to return. Enough of that traumacoaster, its what most of the audience are sick of in the first place no matter how they feel about the character.