When your boyfriend/girlfriend keeps their phone locked all the time but won’t tell you why. So you lock you own phone and get your own friend out of revenge.
“Who are you texting right now? Is it serious? “No it’s just my revenge friend.”
A “friend” that you romantically pursue out of revenge for something that your significant other did.
“My wife pissed me off so bad tonight that I’m going to sext my revenge friend”