AIBU to not want a friend to bring her toxic boyfriend to my party?
Everytime I host an event I invite said friend, an invite just for her. She ALWAYS at some point sneaks in an excuse to bring her boyfriend along. She sometimes asks, and other times will say things like "Boyfriend asked me on a date night that night, so I counter offered we come to your party together."
He is a horrible boyfriend to her, and everytime she comes to me and our other friends telling us about their very clearly toxic and emotionally abusive, then expects us to love him when they make up or go through a (rare) better phase.
Anyway, the last party she brought him to he completely ruined the night. I can't go into details because it's outting, but he basically flirted openly with another of her friends, then denied what had happened despite 12 of us having witnessed his actions. Called her oversentive, hormonal and crazy and tried to coax all of us to join in in isolating her. They openly had a screaming match then left to where they had a room booked just down the road.
She came around the next morning crying saying he kicked her out of the place at 4am in the morning.
I have tried to support her, talk to her, council her, explain how the relationship looks from the outside. I've tried putting her in touch with Womens Aid etc. She is completely in denial and I feel if I push my feelings towards her too much she will distance herself and be all the more isolated and vulnerable.
But my point now is, I'm hosting a party, have invited the same old lovely bunch including her, and I'm already anticipating that she will make some excuse to bring him. I don't want him to come, neither do any of our friends.
AIBU and how can I deal with this impending dilemma without damaging my friendship with her?