can you blame him? he could've caught charges for making out with a drunk girl

So you got drunk and sexually harassed a younger coworker? F *his* life.
If there's any fallout with HR over this, you need to recognise that you have it coming for your behaviour. Apologize to the guy next time you see him.

double standard, she'll be fine.

Imagine if the genders of the people in this story were switched. The OP would get the universal condemnation.

Never mix pleasure with work. Trust me on this one.

He doesn’t seem to be that into cougars maybe, he isn’t just a piece of meat

You need to be carful if he reports you you could get in trouble with work. You were at a company party so you still have to follow company rules.

Are you Meredith Palmer from The Office?

There are a few places where it is OKish to get drunk. An office party is most certainly not one of them.

Just imagine if roles were reversed. YDI. You’d better pray he doesn’t report you. Show some self control next time mmm k?

You should've stopped the first time he rejected you.
The fact that he looked traumatised and hasn't said a word to you tells me that you ignored his rejections and continued to make further advances on him.

No means no. Deal with it.
You're lucky dude doesn't sue your ass or report you to HR, he'd be totally within his right to.