Here's some background, this girl used to cheat on her boyfriend with me back in high school. Well, she died recently and since then I have been dating her best friend (my current GF). My old fling's cousin (our mutual friend) has wiggled her way into my life in the past few days and she looks almost exactly like her dead cousin.

I care about my GF and I obviously know that this cousin of my high school gf isn't really her, but I can't help it that they look so alike. My GF has noticed how I act around this other girl and gets upset with me. Me and the girl don't hang out alone that much and when we do we're usually in public (we live in a small town). We were all hanging out together one night when my GF just yelled at me and ran off, since then she's been distant and disappears for long periods of time. The last time she spoke to me was to say that I wasn't bright and that I should just date the other girl instead.

AITA here?