Went out with some girl friends and they brought along 3 of their friends.

I had a thing for one of the girls and I think she felt the same, but she's 12 years younger than I.

She and I did some flirting back and forth and everyone had drank a lot. The girl I liked ended up having to go home, and the rest of us were taking a cab back to another house.

Where she had parked was about a 5 minute walk from where we were wating for the cab, so we hugged goodbye and I gave her a kiss on the lips which surprised even myself. She said "Oh I got a kiss on the lips!" but not sure if she was into it or just shocked that I did it.

I wanted to ask her if she'd like me to walk to her car (since it was 2:00 a.m and she was parked far away from us) but didn't. Did I mess up?