PLEASE HELP ME FIND THIS BL

All I remember was that the blond guy lost one of his best friends, who I think had black hair. The blond guy is rich, so he had people searching for the guy, but there were a lot of people pretending to be his friend. One day, the real friend shows up, and the blond guy thinks he’s another fake and gets frustrated, so he has him beaten. He keeps thinking about the guy he had beaten up, so he finds where he lives and asks for proof, which the guy did have, but he lied to him, saying he was another fake (I don’t remember if the blond guy was searching for him because he already had feelings for him though).