You know the voice that normally tells you "no that's not okay to do that with that person"? Yeah when you drink, he passes out. You can think, you're just lacking a looot of judgement. |: And yeah what v op said is right, if you go drink on an empty stomach its really easy to get drunk.
Also - it's okay. It was at a party, so she probably won't care. Just ask her out tomorrow or something