Teddy
I mean... I don't think it's weird. It's kind of like a compliment, right?
Then again, you're asking a girl who has never really snogged anyone so I'm pretty crap in that department.
Maybe... ask her if she wants to like... go bowling later? As in.. just the two of you maybe? Maybe that would make it a bit more clear?
Also snogging sober might help make the message a little louder, but I could be wrong. She might just think you snogged her because of the alcohol? That could be part of the problem.