He will be more nervous than you. I doubt he brings her. But if he does just remember.
You are there with your friends to support your community.
He is there with his bitch, while is partner is across the room. Wondering what people think of him, who knows what, and who feels shame towards him. Community will be a few steps down. This will not be an Alpha moment in his life.
While your smiling and waving... Think. " Go pound sand "