His name is Vincent, he's 23 years old and you are 22 years old. You two are dating for around 3 years.

One day you came back home from your pjama party with your best friend.

When you walked to the living room you heard loud moans from the bedroom and decided to check what the sound was.

It was Vincent making out with another girl.

They stopped kissing as soon as you came in and stared at you in shock, not that Vincent would've cared.

"Oh. You're home already?" he said unremorsefully and kissed the girl on the lips while you were watching.