Maybe he doesn't hit you...but if he starts the relationship by threatening to kill himself if you leave him, he's trapping you. He's making you scared to stand up to every bit of manipulation to come, and every boundary that he's going to cross.
Maybe he doesn't hit you...but the way he's telling you that you're meant to love him and be nice to him when you say no to sex is emotional blackmail. You don't owe him anything, and why should you offer your body to someone who doesn't respect it?
Maybe he doesn't hit you...but when he looks at you with something you can't quite identify glinting in his eyes every time you mention spending some time alone with friends, there's that sudden urge to be quiet. There's the fear and the guilt in the pit of your stomach. You abandon your plans and sit with him in silence instead. He knows he has you under control now.
Maybe he doesn't hit you...but the accusations that you make everything a big deal are false. Don't let them tear you down. Refusing to take no for an answer is inherently a big deal. Threatening to kill himself is a big deal. Blackmailing you is a big deal. Isolating you is a big deal. You are not making anything a big deal.
Maybe he doesn't hit you...but maybe there's a reason you can no longer picture yourself spending the rest of your life with him.
Maybe he doesn't hit you...but when he "playfully" shoves you and you get hurt, is it really an accident?
Maybe he doesn't hit you...but why do you stop yourself every time you nearly let slip to friends or family what happened last night?
Maybe he doesn't hit you...but he doesn't deserve a gold medal for supporting you as you battle PTSD, no matter how much he pats himself on the back.
Maybe he doesn't hit you...but you can leave, and you probably should.
Maybe he doesn't hit you...but you still deserve better.