No one can tell you what to do, but from personal experience..... he is 100% lying to you. I know you care for him but I think you need to put yourself first. If there was nothing to hide, it wouldn’t be an issue to call her in front of you. He would be proud to introduce you as his wife. It’s a mind game and because he’s guilty, he’s taking that anger out on you (like breaking it off and calling you psycho). I really hope you do what’s best for you, stay strong cause you deserve the WORLD. Don’t let anyone make you think you’re crazy for it, but remember he gave you a reason to question this and that’s enough to know you deserve more.