Well, you've done it, no hope left now.
Is that what you're expecting? Perhaps not, but you probably don't want us to be for you when you do somethings as well.
Perhaps you feel bad about it because you were enjoying the time you had but didn't know how to stop it, and this was the only way you knew how. I'm not here to sugar coat things and while I often give advice kindly, I think that is neither what you are looking for, nor do you want.
If you feel bad, chances are it's because you did something wrong. And if you want to make a wrong right, you have to be honest. Really honest. The honesty that might cost you your job, but considering that you might be leaving anyway that might be a good thing.
If he's actually harassing you, that's a different story, but based on your previous comments on stream it appeared that it was a mutual thing. And while I highly recommend solving problems between the two of you first, before bringing others in, I can't control your actions.
So if he hasn't done anything wrong, let management know, be honest about whatever made you feel uncomfortable. Be honest about the things that are hurting right now, because they won't go away just by moving, trust me I've tried.
And in the end people have a better perception of you, and you will have a better perception of yourself.
No matter what you do, there is forgiveness, no matter how much trouble there is in the world, forgiveness will overcome. So, apologize, if you've done wrong acknowledge it, and if you haven't done wrong let the other person know.
I've been known to over think and it's late so excuse me if I'm out of line, but I think you matter and I hope one day you will look back at this as a day you leaned a great lesson.