Leave. He is pressuring you into sexual acts you don’t want to do. That’s not ok. It’s super not ok that he’s doing it still, even though you’ve openly told him you don’t want it, and never did. If he wants a threesome so bad, then fine. He can go and find two partners who are into it and want it. You’re not one of them, and that is absolutely ok. Leave and find someone who actually respects you, your decisions, and your past trauma.
Leave now it will only get worse.
Leave. He is pressuring you into sexual acts you don’t want to do. That’s not ok. It’s super not ok that he’s doing it still, even though you’ve openly told him you don’t want it, and never did. If he wants a threesome so bad, then fine. He can go and find two partners who are into it and want it. You’re not one of them, and that is absolutely ok. Leave and find someone who actually respects you, your decisions, and your past trauma.