It was just one of those things that once I noticed it, I couldn't help but keep noticing it.
I understand that was the excuse, but to start rubbing an erect dick and then not finish the job is just plain wrong (other than in some kind of S&M/teasing play, which it didn't feel like). She was clearly interested in his dick ever since she got the photo, so it was strange that it ended as it did.
I understand that, but if you were in the MC's place, wouldn't you question her on the fairness/try to push for more/throw her words back at her. It doesn't have to actually lead to more, but just express the dissatisfaction/frustration of the MC.
Oh, he just fell? From her actions it looked like she performed a Vulcan nerve pinch on him. It made me laugh.
Even if he's extremely passive and going with the flow, he would likely be questioning things and what he should do internally.
Maybe he could be thinking stuff like "What the hell was that!?", "This is weird right!?", "Should I say something?", "What should I do?", "Am I the weird one?", "But what if I say something/don't do something and she/they end up hating me/ignoring me/shunning me/abandoning me?". Basically an emotional roller-coaster going on in his head due to confusion, fear of rejection and other feelings.
Episodes can be problematic when it comes to choice based games due to branching paths and recorded stats. It often ends up with choices and stats being meaningless and the story being linear.
I'm not sure if you intend to have branching paths and for the stats to have any real meaning, but I thought I'd mention it just in case.