He will break my sister’s heart
My friend has been eyeing my sister and I think they are already dating. My sister is 19 and he is 21. I need your advice because this guy is a player. He has broken the hearts of many girls I know but no matter what I tell my sister, she just won’t leave him. She is convinced that he truly loves her and even when I tell her that he is a player, she says she will change him. I don’t want to see her heartbroken and I think I should do something to protect her against this guy, but I don’t know what to do. Please advise.