The uke is a little naive and all but I somehow dislike the seme. He knows the uke loves him, any dumbass notices that and he himself loves the uke yet he is enjoying the uke's struggle just because he feels some gratification from being loved. He could've put an end to the issue with this new guy and explained things to the uke and to the guy like "fuck off, I don't intend to ever leave him. I love this guy" end of story