Lowk i think the maturity he has displayed here clashes a bit with his inaction + him saying he liked her, like dude you have enough brain development to sniff the situation partially and accept it without crashing out as a teenager but you never dared to show your affection more openly? Somethings is offIn fairness, their dating didn't really feel "real", more like putting on a show for appearances sake. Still nice he took it so well, but kinda have a hard time blaming ritsu (I do, there's an order to these things, no matter what) when both of them looks like they barely cared about their relationship.
Reason why you should never date out of peer pressure. Or any kind of pressure, really.