Hey guys, got a little bit of a complicated situation here. Looking to get some laughs out of it.

So me and my ex (we'll call her Mattie even though that's an ugly fuckin name) are part of the same social circle. She's beautiful and sweet and we get along fine at parties but a lot of the time I'll get left out of the party because the host (we'll call her Sarah) will leave me out so she can have a good time without having to worry about me being there or whatever she justifies that shit with. It may or may not be important to note that Sarah and I were friends before she was with Mattie.

So I invite Mattie over to my NYE party because I don't want her to feel like a lonely ass loser on New Years while all me and my buddies are partying. Now here's the weird shit:

She comes over with my buddy (Ed) at about 11:15. They leave at exactly 11:53. Ed shakes my hand and gives me this goofy little grin and I know their leaving to make out behind my back or some gay shit.

Cut to last night and I find out that they're having themselves a little sleepover.

Now here's the thing, I do NOT give a fuck if they wanna smooch or date or whatever. I have a SERIOUS problem with the fact that people know this and haven't bothered to tell me yet. It shows a clear lack of respect from them. I dated this girl for four years when I was a kid. Don't you think I'm owed a little heads up from SOMEBODY?!

So how can I turn this situation into something funny for myself? Ed did a guest vocal spot on my latest album so I'm thinking of giving him the old "Hey bro just wanted to say thanks so much for being on our album. Your friendship means a lot to me!" and then kicking back and watching him squirm.

The weird thing is that he's suuuccchhh a BP that I couldn't imagine him not feeling bad about this. How can I fuck with this guy? Or am I just being a little bitch who should let it go?

Edit: tl;dr friends are smooching behind my back and nobody in friend circle has had the balls to tell me yet. How can I fuck around with them for some laughs?