facebook cheater
A Facebook cheater is someone who's dating someone else but still messages, comments, and likes everything another person posts like they're trying to get them to sleep with them. They're so obvious, but the person being cheated on never catches on.
Hey, I saw your post. You look amazing. Want to meet up?
I just became friends with your ex. We should hang out sometime.
Why are you always commenting on my posts? You're making me blush.