Having a lot of anxiety..

I’m having a lot of anxiety about spending New Years with my boyfriend’s family. I have met them before but whenever we go to their house he leaves me and talks to everyone and I’m left there alone to look like a lost puppy because no one talks to me. They are super rich and there are always a lot of people at their gatherings. His grandpa rented a big log cabin for his whole family to stay at for a few nights over New Yeas and his family already wants him to drive with them and not me. I never feel very included and I’m not sure how to take it. He has never brought a girl home to his family and I always try to be so nice to everyone but last time they had a party I left having a panic attack because I was having a horrible day and he left me alone again. How do I overcome my anxiety? He was going to drive with me but now his family wants him to go with them leaving me to drive alone. Please help!