AITK for refusing to cancel plans with my girlfriend for my friend’s birthday after the way they’ve treated her?
I’m in a close friend group with 2 other guys. Recently, two of us got into relationships, while the third is still single.
Ever since I started dating my girlfriend, my friends have made it clear they don’t like her. Their main complaint is that I “don’t spend enough time with them anymore.” Before my relationship, I used to hang out with them almost daily. Now I still see them around twice a week, but apparently that’s not enough for them.
They also say I’ve “changed,” but honestly the changes are mostly positive. I got more focused, found a stable job, and started taking my future more seriously.
One incident especially bothered me. One of these friends had surgery, and my girlfriend came with me to visit him. Later I found out he insulted her by asking how much she earns and laughing at her answer. Meanwhile, he’s unemployed and financially dependent on his parents.
Despite all this, my girlfriend has never fought with them or disrespected them. She simply keeps her distance now.
They’ve also made passive-aggressive comments whenever I spend time with her. At one point, while I was literally on a trip with them, they were taunting me for planning another trip with my girlfriend.
Now one of them has a birthday party this weekend. He invited me, the other friend, and the other friend’s girlfriend. The issue is that I already had plans booked with my girlfriend a month ago, and they only invited me today.
I told them I wouldn’t be able to come because I already had plans. Now they expect me to cancel or move everything for the party.
AITAH for refusing to cancel my plans? And WIBTA if I told them their behavior toward my girlfriend is a big reason I’ve been distancing myself?
EDIT: the two friends are 23-24 im 26, my gf is 23
one last update that i remembered just now, so a couple days back they (the 2 friends) invited for a dinner outing and i agreed to it. later they said it is cancelled and i got to know they went by themselves.