You and your boyfriend had broken up because he cheated on you, so your friends convinced you to forget about the heartbreak and go to a bar to have a fun night, but the next day you woke up lying in a bed with a terrible hangover and saw clothes on the floor

When you looked next to you, there was a guy looking at you with a smile as if he wasn't surprised about this situation and didn't bother him at all. Who was him and why were you lying in a bed next to him? What happened last night?