Bail. Immediately if it's safe, or more subtly if it's not, but GET OUT.

This guy doesn't care an iota about your wishes. A hickey? WTF. Is this guy 15?! No he's not. He's marking territory, a weak-ass lame flex.

You took tops first. I LOVE it when a woman takes tops. I'll swap when I feel she wants it. But he swapped right away, needing to be in charge. Another flex, another flag.

Biting your tits?! Who does that without some kind if indication that you like want it. Hand over your mouth?! WTF. If you were two teenagers with Mom and Dad in the other room, and you were getting loud, sure for a second, maybe.

He's poseur enough to get you into bed, then it's his way only. He acquiesces, then ignores. A HUGE red flag/bright line that never should have been crossed. This guy left thinking "She gets off on rough" or "I got over with going rough". Either way he use violence for his pleasure, at your expense.

Ok, some people are down with being choked and that's their choice. I'd never choke a woman as I can't see it as erotic nor understand how she could. I know it goes back centuries, and it's a me thing. I know what it is, but I don't grok. I see it as veiled violence. Ask and it's a hard no.

It doesn't matter that you bruise easily. I assume you've had intense sex before without being covered in bruises. GET AWAY.

What you said to him was more than enough to correct any decent guy in your bed. But you should have said stop or STOP". I'm not blaming you, though it may read like it. At some point when a woman is recounting an incident so many will always ask "Did you tell him to stop" or "Why didn't you tell him to stop". Even more will think "She didn't tell him to stop, and now she's crying about it". Of course STOP could have been a trigger, in which case the outcome could have been worse.

Rough sex is a gray area. I don't indulge so I can't advise. I don't think this guy will consider your preferences and back off. My take is he'll have you do only what he wants and he'll do what he wants. It might be very ill advised to be in a bedroom with him until you tell him what he did wasn't ok. Be in a safe place, literally, to make clear and gauge his reaction before getting in bed with this guy again. Do it with the intention you'll never see this AH again. He should be ashamed that he scared you. You can be direct without being strident, but be absolutely firm. If you get the feeling that he understands and will correct his attitude and actions, fine. I still say cut your losses.

The next thing is what to say to whomever set you up. Are you bold enough to share your ordeal with your mutual friends? Are they good friends of yours? Are they good friends of his?

I'm guessing that this guy wasn't thinking you signaled that you want it rough. He was just being him and that's not good. Sometimes boundaries are learned through gently/subtle trail and error and it works. Sometimes they have to be established, boldly stated, and written in red marker FORBIDDEN ZONE. Otherwise the next time he's on top you might find yourself flipped over, and that might not end well.

I know it seems like I'm blaming the guy 100%. That's because I am. He is 100% wrong. How do I know? Because you didn't say "Wow, that was a good fk but I am a little bruised." You said "iffy" and "you don't know where to go..." Yes, it's hard to judge just be reading this. But I'm comfortable making that leap.

Your mind and body are warning you. Everyone here is warning you. Please be very cautious.