I don't think so... Ofc we can't trust him all the way yet, but his apology seemed pretty sincere to me, like, they're adults living college life in a day-to-day type of manhwa, he didn't need a grand gesture and deep facial expressions to show he was sorry. Uke pointed out the issue, same kneeled down, apologized and told him the truth. Sounded convincing to me in a very realistic way, which makes sense in the atmosphere of the story

Idk the way he kneels,there's no yearning eyes kind of sight. It's like he's telling him the word like,to manipulate the bottom. Or I'm just imagining things.