So, in the exGF's head, assuming that her intentions were purely prank-filled, what was she expecting to be the reaction? "Oh, you got me! Shucks, that was a good one, babe. Anyway, where do you want to go for dinner tonight?"

The prank itself is a major betrayal of trust. Recording it, with the intention of posting his reaction, is another betrayal - a violation of his privacy. Deliberately causing someone emotional distress isn't a prank, it's manipulative and abusive. Cheating pranks are up there with the "sorry, I accidently ran over your pet and killed it." pranks and the fake-blood-saturating-the-pants "I think I'm miscarrying in the 5th month of our wanted pregnancy" pranks, and the "your dad just called from the hospital, your mom's been in a car wreck, and she probrably won't make it." There are events that we all understand would be emotionally traumatic. We all understand that lying that a traumatic event has happened isn't funny, it's cruel. "It was a lie." doesn't take away the initial pain of the revelation, and it doesn't take away the fact that someone you previously trusted deliberately caused you emotional trauma, lied to you, and did so for likes online. NTA

"What? No officer I am not some insane bastards who burns orphanages for fun! You see that camera there? It is just a prank! As soon as the fire started I went in and escorted all the kids out! SO no harm done! I mean sure... 3 year old Timmy is in the ICU for third degree burns but who could know he was SUCH A SLOW RUNNER... That is not my fault that ppl don't know how to react to pranks!"

The entire point of the prank was to make you feel betrayed and then laugh at you for feeling that way. Don't spend any more time on a partner who's goal is humiliation for their own amusement.

As others have - she was straddling the other guy, and both were in their underwear, and they were moving as though they were having sex. That is sexual contact. If somebody did that to somebody else without consent, that would 100% be considered sexual assault (and rightfully so). How can anybody think that this is OK or that it is a joke?

I wonder what the reaction would have been if the shoe were on the other foot. The whole scenario is just idiotic. Who would possibly think that was funny?

You know what another great prank would be? Call her up and forgive her. Let her move back in, give her a good rogering and then kick her out with a 'psyche! That was a prank! Now f**k off forever.'

Who wants to bet the exgf and the "friend" are already shagging, this time for real

Where there is smoke there is fire and that prank was enough to blot out the sun.

The ex and the buddy will go public within weeks.

It’s only a prank if all parties involved think it’s funny.

I fail to see how anything about that "prank" was funny in any way. If the prankee isn't laughing it's not a joke.

ExGF wanted to be caught 'cheating' so two men would fight over her; even if only briefly. She likely enjoys having men vie for her attention. She talked the inmature idiot mutual friend into it under the guise of is being a 'prank' and because he's likely into her This is actually the best case scenario as the OP walked away instead of throwing hands; which, is a more reasonable reaction to expect than enyone finding this funny.

"it's just a prank bro". You can bet if he did that to her, she'd have kicked his a*s and burned his belongings.

As a lawyer I know of a case where the two pranksters who were pulling a similar prank were shot dead by the husband when he found them. That's how stupid this alleged prank was. And why is it funny? Doesn't seem funny or harmless to me.

It would take a warped mind to think up such a thing. How the heck did they expect you to react ..... laugh it off ? I don't think so.

That's beyond stupid and ruined relationship and friendship. Good job, idiots.

Seriously wtf wrong with some people. Do not understand the thought process and mental gymnastics needed. To think that would be a funny prank.

I'd bet cash money that the two "pranksters" were: 1. already fücking or 2. are now.

You my friend had a lucky escape imagine if you had married this woman then you would have had a lot more to lose.Be thankful not sad

You did the right thing. Ask those who think you are wrong how they would feel if their SO's genitals, only covered by underwear were within less than an inch of another person's genitals with the same (lack of) covering.

No one get’s to dictate where YOU draw the line

I would have been livid had the shoe been on the other foot. There is not one thing funny or cute about it. Tasteless and trashy. I am glad you told her and the “friend” to kick rocks. If you had done that to her she would have gone ballistic! I don’t care how many guy friends I have I would NEVER even think to do something so cruel to someone I love. Good riddance!

NTA. Who in their right mind would actually think this was funny? Prank or not she crossed a line. Move on.

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I say that the girlfriend dodged a bullet. I wouldn't date a guy who was so jealous and controlling. I'm glad her prank revealed what a Cro Magnon caveman the OP is!!! No normal man is "traumatized" by a prank, but a jealous guy of course loses his sh*t. She's a lucky girl. I hope she doesn't fall for the toxic masculinity b.s. that a man's excessive jealosy/ insecurity "proves he cares." It certainly does NOT.

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Dude, just strip off and join in, see how it goes.