Is this person suffering from some form of dementia? The company you work for is probably worried about a lawsuit, which is why they suspended you. Hang in there and good luck.
He's done this before. You're not the only one. He's probably done this to other women in his life, maybe to children, maybe to his wife, daughters, friends or whatever. He's aggressive. What he's doing is reliating and trying to make you look like the bad guy. Because something happened, they have to investigate it. Be careful what you say or do. You won't get much sleep tonight, so don't be betting on that.
Stay as calm as you can. You'll get through this, and they will probably reveal that he really is abusive and you were just protecting yourself.
My sympathy. Went throu simmilar, but nothing happened.