When someone who knows you are in a relationship, posts a flirty message publicly on your wall in an effort to piss your significant other off.
"Wow dude, she knows that you're happily married to Dee, yet she stills posts those overzealous greetings on your wall."
"Yeah if she tries to Facebook fondle one more time, Dee will kill her!"
To post an unsolicited flirty message on someone's social networking site, i.e. Facebook, MySpace, etc.
"Dude, she knows your married, yet she continues to e-grope you every chance she gets."
"I need to un-friend her cuz it's starting to piss my wife off"