AITA for not wanting to go to their wedding?

My husbands best friend is getting married and I have never been a fan of his fiance. They got pregnant after a month of dating, I always felt like she wanted to trap him so she didnt have to work. Which, appears true, after she moved in with him that second month, she quit her job…hes trying to pay off all her debt. His friend however, has always been a good guy and a good friend to my husband, so I am trying to be supportive.
Long story short, his fiance is best friends with this woman who tried to be a homewrecker with my husband. She tried to get him to cheat on me with her and he told me about it asap and it ended with very harsh words and us blocking each other.
Now they are getting married this summer and the homewrecker is the maid of honor and my husband is supposed to be the best man. The fiance has already had words with me telling me she hates me because of whatever lies her little friend has told her. I frankly dont care but I also dont know if I can keep my mouth shut at the wedding, if anythings said or done. I honestly dont want to go to the wedding because the homewrecker wannabe will be there.
My husband says he wont go without me and I am feeling guilty. Would I be the AH if I tell him I am not going? I dont even support these two getting married…Id only be going to please my husband.
Side note: my husband also dislikes this fiance and he also believes she is using him for money and a free place to live. He doesnt support the marriage at all but doesnt have the guts to say that to his face.
