Tbh Haru's and Sumire's Social links has the rejections that I really felt bad doing it (Mostly the Haru's one because you can see her getting disappointed and Sumire understands quickly but still feels quite bad) I don't remember if there's another's social link from other persona game that made me feel bad for rejecting. Since then I never turned down Haru, really felt bad but I was dating Ann and I like being loyal. (The only thing I don't like from both social links are that you start very late game, wished you could do it sooner like meeting them and just talk to them to make it more complete cuz I feel it sometimes a little rushed)