does anybody know this short manhwa

I've read this story before and I happen to remember it again now but not title. Sooo the two guys are like university students and the ml (popular guy) makes a bet w his friends about dating the mc. They end up banging and ml falls in love w mc for real.

I recall the chapter where the mc finds out about the bet and the ml runs after him. It was so cute such a shame i couldn't save it