Im not sure how to go about this

I (24f) have been with my boyfriend (26) for nearly 2 years recently he was invited to his friends wedding,He put us both down as guest. The bride does not want me to come. To give a Lil back story me and the bride did go to school together I barely talked to her, I usually stayed away from her because she always had the most sour attitude. So she doesn't want me to come because she thinks I don't like her. I did express to my boyfriend that I did not want him to go without because in my eyes if the roles were reversed I wouldn't go anywhere if my partner was not welcomed. I guess what I'm asking is am I in the wrong for not wanting him to go? And should i just let him go? Sorry if this is poorly written I struggle at putting things together