Girls, some help: how do I take it from here with this girl?

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I'm 19 and met this girl at a party, we were bit drunk and kissed. She didn't seem drunk, but she did say like I was really good looking, smell good, sexy and she didn't like saying good bye and wanted ordinary kisses.

Well, after 2 days we spoke a bit on fb chat about the party, she had no regrets but she said she hardly remember bcos 'she was so drunk' while wasn't completely the case..don't know why she would say that..

Then we hadn't spoken for a week and then we spoke for a few hours on fb chat and then again nothing, until she after few days apologised for not talking to me and then we talked a bit again.

Aaaand now nothing for 1,5 week. I like her a bit, but I neither know how to suddenly start talking to her after such a long time of no speaking... Any advice? I quite like her..