For context I've been recently reintroduced to the single life (saving that for another post). And I've been relearning all of this as I've gotten a bit rusty during a very long relationship.

I invited some guys to a party, aswell as a girl I've been seeing (non-excusive). With one guy I shared some details about my dating stuff to give him some examples as he's been single for a long time. I guess that was my biggest mistake.

So first thing we get to the party this guy says "I've heard so much about you" to the girl... I brushed it off and we went on to party. Then he loudly tells me she's so pretty.

At some point I go to the bathroom and I hear him say I'm such a good guy, I care for him and everyone. The girl should get with me and so on....

I take her back home and of notice the whole dynamic changed, she dried up, no more sex. She tells me the guy told me I really really liked her and I think she's extremely pretty. (He was projecting here, I never even said those things. She's cute sure but not the goddess he made her out to be at all) Aswell as details of us meeting...

Later I called my friend and he confirmed all she and he was only trying to help me, wtf. I didn't expect him to be this deep in nice guy land at all.

Guys is this salvageable? She now thinks I'm even worse of a nice guy then he is... I didn't expect a simp titanic event that would ruin my plate. And we're all 30+ ffs.

Obviously I'll keep my mouth shut to everyone and won't bring this dude anymore. I probably made more mistakes here too haha

EDIT: Maybe better suited for TheRedPill as an example what not to do... After writing this I see the answer. Don't tell anyone anything, don't try to help nice guy friends and don't bring them around your girls. My frame was bombed and she thinks he spilled the beans even if half of them were imaginary it won't matter if I try to explain. On to the next :)