/AITAH for crossing my extroverted friend's boundaries because she crossed mine first?

So 2 days ago. I was in a suprise birthday party of my extroverted friend's sister. Later on I was at the corner scrolling through my phone because I couldn't talk to anyone and I only knew my friend and her sisters. But she noticed it and tried to make me socialize. I told her no and tried showing me how by entering a random conversation with other people. I told her it's because they know her more than me but she didn't care. She then got her cousin ( someone I don't like) and told her the entire thing. Him being a dumbass though I was just shy and grabbed me and introduced me to his twenty something year old friend( I am 17) it was soo awkward with him that I had to lie about getting a phone call just to leave this conversation. The next day I argued with my friend about it and the fact that she told my sister too ( she doesn't know I am an introvert) but I fucked up by using her insecurity against her ( I won't mention it out of respect) and suddenly I am the asshole. I know I probably shouldn't had done that because it is kinda of petty move but I was seriously angry because she knows damm well it isn't comfortable for me to just talk to any bozo. Am I the asshole?