Ive partner swapped with my best friend.The boys are also best mates.She had my man and i had hers it was her partners idea we did it a couple of times.I wish i never did that with them.I have done a few diff things like that but when it comes to good mates it can fuck things up especially if they are sly.This happened about a yr ago and she came over when i was out and screwed him hmmmmm that pissed me because of the sneakyness.I have done it a few years ago a few times in a different
situation and it was one of the best experiences of my life.