What to do? Do I stay or leave? Or take sometime apart?

Hey, welcome to Fluther.
That sounds pretty scary—when you refused to give him head because you had to leave, you thought he was going to hit you, and then he threatened you, saying he would get you back?
You should not be afraid of your partner, nor fear him attacking you in your sleep.

I think you should tell him, in a public place like a café or a mall, that he scared you and his behavior was unacceptable. If he doesn’t apologize and change, you will leave.

How old are you? If you are a teenager and still living at home, please tell your parents about this. If you are and adult living on your own, please tell a trusted friend about this.

Best of luck to you.

Great advice, @bookish1.
The only part I would somewhat disagree with is the “if he doesn’t apologize and change” part. I don’t believe that people change all that much. They are able to suppress things for some time, but eventually this scary guy will make an appearance again.
Walk away from this relationship now. Tell him in a safe, public place.

Get running fast and move on. I wouldn’t touch that kind of guy with a barge-pole. He sounds like the leech kind that will cause you problems later on.

I don’t know @tom_g. If they have been together for two years without a similar incident, and until this point they were happy and compatible. It is worth trying to find out what the problem is. Anxiety and stress can make people do strange things.
So, @Amo101 is this the first time he has scared you with his anger?

Yeah, @tom_g, after some caffeine, I agree you are right. Someone like this should not be given a second chance.

Being threatening over sexual behavior is very scary, and could turn to violence and/or sexual assault very quickly.

@rojo , yes it is the first time it happened and I asked him via text if he’s ready to talk and he said I’m going to judge the wrong person and when he comes back maybe he’s going to talk.

@Amo101 : All you can judge a person by is their behavior. Words are cheap. Think clearly about how his behavior made you feel.
How old are you both?

@rojo: “I don’t know @tom_g. If they have been together for two years without a similar incident, and until this point they were happy and compatible. It is worth trying to find out what the problem is. Anxiety and stress can make people do strange things.”

There is no shortage of anxiety and stress in life. If anxiety + stress results in this, then the outlook isn’t good.

@tom_g judging from his remark ”...and he said I’m going to judge the wrong person and when he comes back maybe he’s going to talk.” you probably made a good call on this one. This is a pretty controlling and agressive threat. This is the time to walk away and not look back!

But, I am going to predict here that he is not just going to let this happen. @Amo101 you had best be prepared for a pretty harsh response. He will threaten you and if that doesn’t work then try to make you feel guilty and if you still resist he will try to cajole you back (Aw, come on babe, you know I didn’t mean it).

…when HE comes back, HE IS GOING TO TALK

Definitely sounds like he thinks he is in control of this relationship or if you want one with him it is going to be. It is all his way or it aint’t gonna happen.

Run.

What kind of guy gets that mad because his girlfriend won’t give him a blowjob?

Answer: One that’s a psycho.

Like I said, run.

Sure, @livelaughlove21 I can see pouting about not getting one but I don’t think I have ever gotten angry about it. Thats why we developed hands instead of paws.

@bookish1, we are going into our 20s and he and I have our own place. And he did apologize for having me see the way he reacted and felt the way I felt. And he said when he mean he is going to get me back is that he is going to get me hot and then stop, I know seems really immature of him. @rojo , he did kinda control the conversation by saying “we are done with this topic” and that was the only way he could of calm down by yelling.

A guy that gets violent because you won’t have sex?

Get rid of him.

So first he gets aggressive and threatening with you, and now today, we find out on your New Question that he also cheats on you and lies to you. This guy is a creep and a selfish user.

Throw him out today, not tomorrow. Try to grow a little bit of a back bone, look upon this unfortunate relationship as a lesson, and pick a better man the next time.

I’ve had men get whiny, start begging, and act like brats when I declined to make the relationship sexual. I’ve had men be persistent and try to persuade me otherwise. But, I’ve never, ever been threatened with physical violence.

Even if the words were idle and empty – if he’d never actually hit you – they’re unsettling. I strongly recommend running in the opposite direction from someone who’d even say that.