lets not forget how crude his words are? when he came in during his rut, he just went and asked uke if he lost his virginity yet, he also mentioned he hated dealing with virgins mid sex, oreviously he had also told uke to come to him when he lost his virginity. so i feel like he isn't really jealous or anything idk why he is curious now.
Spoiler:
ML is not a good person but he was given date rape drug kind of thing to induce rut in him because many people want to have a child from Dominant Alpha. Seme unfortunately gets hit with a brand new drug that erases memories of the fake rut. That's why he didn't care about the person he slept with. He will however regret about this later since he likes the MC. And Don't worry MC is very strong in mind!
Does he find out he's the one who took mc virginity
I like how seme is upset when he thought baby slept with someone else. But I do not like the fact that he raped uke.