AITA for saying my dad cant come to my wedding

NTA. My (26F) parents are divorced and my father, diagnosed bipolar/narc, has always been hot and cold. We have a relationship but I keep my boundaries to maintain respect for myself. He had a stroke years back; thus, is disabled and makes poor decisions. I live close so I do what I can to help him, despite the fact he was a shitty father. He has an on/off friendship with this homeless, alcoholic woman who’s in and out of jail and whenever she comes to see him, he cancels all of our plans and leaves me messages saying “this woman is more important to him than us (my brother and I)”. He’s literally said he would rather just be with her moving forward instead of ever seeing us again. Anyway, when he gets this way. I just cut him out completely. I stop picking up his calls and refuse to run errands for him. If my dad acted this way towards my wedding, I wouldn’t want him there either. You know your father and the effect he has had on you and your life more than your fiancé does. This dag is about you and if you need to protect that by having some security, by all means, do. If your father were to intrude upon your day, your fiancé needs to understand what type of scene that creates for you internally. She might not be able to see or feel it, but for you, it’s real.

/r/AmItheAsshole Thread