<human>: Can you condense the text into a few key points?

ok so we have been dating for close to a year. we live together and have a dog together. yesterday was his birthday and we drove ~30minutes to his friend's house for a party for him. i didn't know anyone there (~20 people) and felt really awkward, sat by myself and no one said a word to me for hours. i had a 25oz strawberrita and once he came over and brought me another drink. i proceeded to get drunk and sad and felt really insecure and lame. 

around 1am he comes over and asks how i'm doing and i ask if we can step outside... we get into fight.. i start crying, don't want to go back into the house but he's screaming at me that i have to. i sit outside and call a cab to go home. some of his friends come outside, we fight in front of them, the cab comes and the guy says it'll be $120 which is insane because it's a 30minute drive... one of his friends agrees to drive me home. he says we're through and i am no longer his girlfriend.

so i feel terrible because i made his birthday shitty, but at the same time i feel like he could have tried to include me a little in his night when he could obviously tell that i was all alone.
i know that i'm more in the wrong than he is, but i have anxiety issues, especially around large groups of people i don't know, and he knows this.

i love him very much and we rarely fight about anything, but when we do it's usually about my anxieties.  i made an appointment to talk with a psychiatrist at my school on monday. i hope that i can work on getting over my anxiety, as i really don't want to break up with him as we get along really well otherwise.

if anyone could offer some advice on ways to try and make it up to him or how not to break up i would greatly appreciate it.
<bot>: social anxiety around group of boyfriend's friends at his birthday party, felt left out, got sad, fought with him, he wants to break up now