Sister's Boyfriend Uninvited to Wedding

Here's the story. My wedding is in two weeks. My sister has a boyfriend,

Mark. He's... difficult. Always the center of attention.

At my fiancé's birthday dinner, Mark stood up and gave a cringey speech about how my fiancé

was 'finally marrying up.' He then pretended to 'accidentally' spill wine on my mom.

Everyone was horrified. So I made a decision. I called my sister and told her Mark was uninvited.

I said he was disrespectful and I didn't want that energy at my wedding. She exploded.

Said I was ruining her life, that I was a bridezilla, and that she wouldn't come without him.

Now my parents are calling me, saying I'm causing family drama. So,