Think I know a second love "revenge" joke also...
When his girlfriend move to a different city to earn a degree in University, the guy worried that he might lose her to another man. So he began constantly sending her emails, phoning her, and writing her letters.
Her answers became more blunt over time as this progressed, and even more worried, the guy sent even more correspondence to his girlfriend. What he didn't know was that she had already hooked up with someone else, and persisted in trying to find out what was going on.
Finally, the girl had enough. She took a Polaroid picture of herself doing the unmentionable with her new boyfriend, and sent it to the poor guy back home. Enclosed was a letter, in big bold letters wrote:
I got a new boyfriend, now leave me alone and stay the f--- away from us!
The sad guy was of course heartbroken, but more than that he was very, very pissed.
He angrily took the nude photo, and enclosed it in a letter to the girl's parents, which simply stated in big bold letters:
Dear mom and dad, University is great! I'm really fitting in here. Please send me more money!