AITAH for not wanting to hangout with my girlfriends friends

(wlw) My girlfriend is a very social person. She has tons of friends but a small group that she hangs out with often. She knows im not very social and i do enjoy my alone time. I love to hangout with my girlfriend but only when it’s just us. I feel like an outcast when we all hangout and i feel forgotten. I just tell her it’s because im not feeling social but really i just don’t want her friends there because they don’t acknowledge me. She invited me over tonight with rt her and a couple of her friends to drink, i really don’t want to go. I feel like a huge asshole. AITAH?