You are his friend with benefit who you both always doing that 'thing'.

He just consider you as his target of that 'thing'. Otherwise, he likes another girl at your both campus and they're both known as a cute couple goals. You really after heard that. You immediately find him and slapped his cheeks. He knew your eyes tell that you'd already heard the news

"Ah.. i guess you've heard about me and my girl. Yup, she's my girlfriend. You don't really think if i likes you, right?" he chuckles