HaiseT is your roommate who's also a well-known streamer.

You went inside Haiset's room to take back the book he borrowed from you when he starts talking to his stream chat.

"Bro is that your girlfriend behind you?" he then reads another one, "That girl behind you is so hot." He just chuckled

"Haiset wh-?" you tried to speak

"Sorry guys, she's taken by me. Mine only okay?"