Is this girl attracted to me or does she like me?

we met at a party for the first time and she was a bit tipsy, but i was talking to her and she was cool. she hit me once after i teased her (playfully) and she was a bit flirtacious, wit both me and my friend. her friend asked her who she wanted to hook up with and she said she wanted her ex because they have drama. she added me on facebook though and not my friend. does this mean she could be attracted to me?