Recently the same thing happen to me, or similar
But I asked the girl to prom before hand, she said yes
Things were good, then I asked if she liked me, and got a no.
Later on, a few days later we were at a party, we hadn't been drinking, and she was all over me... the whole night.. so it seems she likes me sometimes, then others not at all...
Honestly, I wouldn't bother she is probably just playing games