facebook cheater
A Facebook cheater is a sneaky person who's dating someone else but still texts, messages, and comments on another person's posts like they're trying to seduce them. They're so obvious, but the person being cheated on never notices.
Hey, I just saw your post. You're hot. Let's go out sometime.
I just became friends with your friend. She's amazing.
Why are you always tagging me in your photos? Are you trying to make me fall for you?