I brought a date to a party and this girl who has frustrated me for years was there. She was extremely happy and welcoming of my date, shook her hand, smiled, said "nice to meet you". So this girl doesn't feel anything for me, right? I just want the reassurance so I can rest my conscience at ease.
Most Helpful Girl
Not necessarily- she could be hiding her jealousy because she genuinely wants you to be happy and if it's with the other girl then so be it. Also, she might not feel like she has a right to be jealous so she won't show it.
I've personally done this- I really liked this guy for awhile and it sort of seemed like he liked me back, but when he showed up with a new girl, I was as nice as I could be to both of them. Why? Well, it's certainly not HER fault that I like him so there's no reason to be rude to her and if he truly has no interest in me, there's no need to make an idiot out of myself and screw up our friendship.
Of course- it can go the other way too. A guy I had a fling with was talking about seeing another girl in front of me, and I had no reaction because I just didn't care, had no further interest in him.
Bottom line- it's hard to tell from her reaction alone. If you like the new girl you brought to the party, let the other one go. If you still like the not-jealous girl, don't lead the new one on.0