I'm female and pan, in a relationship with a great guy. One of his girlfriends thinks I'm cute and wants to have a threesome. I was excited by the idea, so I met with her to get to know her better.

I found out she lied to one of her partners about meeting with him for sex and now I'm 100% put off. I find lying a massive turn off. I told him I'm not attacted to liars, so no thank you to any sexual situations with her that involve me.

They are now looking onto a threesome without me and I feel upset. I feel like a big fuckup for blowing a chance like that because of something so dumb. But worst of all, I'm embarrassed that I'm jealous.

I could really use some advice from people regarding the emotional side of of this. I've never even felt anything close to jealousy before towards him, so I don't really understand why I feel upset.