Your mom should learn to respect your opinion,and she probably knew you weren't going to agree with her inviting your old dad so she waited last second to tell you when their was no changing the decision. I suggest you have a talk with her(your mom) about giving you some privacy.and letting you make some of your own decisions. I would also try to limit yourself away from your old dad/try to avoid contact since he makes you uncomfortable. Hope ur lip gets better aswell

Im so sorry u have to deal with ur mom who doesnt even respect how u feel or what u say. If at all possible make a way to escape any situation where you dont to be in around ur old dad. Pls stay safe man 🙏❤️

That sucks- sometimes parents arnt the best