I started talking to this cute, pretty nerdy looking girl. PhD student. I just made out with her like 15 min ago.

After that, I say "Bring your friends over, let's have an afterparty." I live a block from the bar we were at.

She says "I think you're pretty cool, but you're acting too cool." I say "What the fuck does that mean?" in a joking way. She says "Take it however you want." I leave.

WTF happened? Can anyone explain this?