10 points for the best answer really need advise what should i do?

i really like this girl last night a freind of both mine invited me and her (the girl i like by the way her names holly) to his sisters party/get together, firstly we met at her house and talked for a while and she got out a book which tells you who your compatible with and about the person by giving your star sighn. she did me and this freind of both ares (james) and her self and some other star sighns, it happened to come up that me and her were the perfect match, she then said, when tom mention it on the way out that, she said that doesnt mean anythink and that there are plenty more scopios (my star name is scopio) and the book said that her perfect match would be with a scopio. when we got at the party, we met james sister, and i and her ended up getting a bit tippsy and a little drunk. she was laughing a lot and starting putting/leaning her whole body into mine, and she was putting her head on my shoulder, and was touching my hand some times, it was like this for about an hour and she had her whole body leaned in mine for an hour and it was pretty obvious flirting, this was when she was tipsy anyway later on i was sitting down and watching somethink on james laptop, she came up and said, i dont want you to take this in the wrong way if i sit on your lap and sat on my lap to see the laptop screen as well. when she got up a bit later she said i know youve probably taken it in the wrong way. anyway later on she left me and when of for about 50 mins to talk to james sister. at 12 midnight (new years) everyone was saying to find there partners to kiss, (there were only 3 boys there were me, james and, james sisters husband). then someone said someones gona have to miss out then, holly then said im not kissing anyone here. me and holly also had Spaghetti Bolognese and after i had finished mine she said did i want some more i said no but she insisted and said go on, so i said go on then and she gave me some of hers that she had been eating from. my question is what do you think of all this she seems to be sending so many mixed messaged and im just soo confused, also at the end of the night she looked on my phone and shes having a look at my phone, and im sure she looked on my messages what do you think of this as well i am abit worried as i dont have that many messages from over people and have only got txts from her and one or 2 other freinds what do you think she will think of this. By the way shes 18 im 19 and we are freinds, and i have been going around her house do you think she likes me or not, i did txt her on thursday and asked her if she would like to meet up if shes not busy on sunday and she replyed friday saying "i would like to come around on sunday but i im out for lunch and i dont no what time im working yet so will let you know tomorow" what do you think of this would be grateful for any answers thank you.