Met a girl at a party - What now??

[Guy]

So I met this girl from my school at a party.(at the very beginning) Me and my friend sat down on a table where she and her friends were sitting. She was quite drunk but not that much. She asked our names and wanted to add us on FB and such. We chatted some casual stuff with her - can't remember quite what tho. I noticed her leaning on me quite a lot. So after that we separated ways. Today, the morning after the party I added a new profile picture on FB and she "liked" it. Are these signs strong enough for her to be interested? Or was she just too drunk? Should i chat her up on FB? And how should I proceed then? Thanks! Ps. We're both 17. (18 this yr). Also, we're having a 2day cruise next weekend where she's coming too. Any advice appreciated! We didn't engage much but i think i'm crushing for her. I'm not very experienced in this so i'm asking for advice. Sorry for typos ;p

[grandma]

I think it's pretty evident she likes you, she is giving very strong signs that she does, however, girls are very bad at misleading boys, so I would spend some more time with her to see if she does. Facebook might be a good way for you to socialise with her because she can't see your reaction to things, it might help you think better when you speak to her, be a little more brave.

I always say, nothing ever bad comes from being honest. Ask her if she likes you straight out, don't be embarrassed. If she says no, then don't make a fuss about it, just say "ok lol. thought you did haha." You'd be surprised how much easier it is to ask straight up.

Remember too, most girls usually wait for the guy to make the first move, so if you wait around and she doesn't make any more suggestions she likes you, it doesn't mean she doesn't like you.

Good luck.