I've known this girl for a month now and we're almost always together. Yesterday she told me to come down to her apartment and it was great. We've not been physical until yesterday.. She was sitting really close to me so we kissed and then talked for ages, I left the apartment at 5AM in the morning, we talked for that long. She told me alot of personal things which I doubt she told anyone else. Everything was going great. Today she was really standoffish, I tried hugging her a couple of times but it was quite one sided. She made an effort to hug me once throughout the day which was a semi-shoulder hug thing. Also, She was carrying some really heavy books, I offered to carry them for her about 5 times and she didnt let me do it. It was so obvious she was really tired I really wouldnt have minded carrying them. She's going on a mini-vacation for the weekend and was going to the airport, and before she left she said, 'Thanks for <insert everything i've done for her> and everything else' and then she smiled and left. After about 10 minutes I sent her a text telling her to have fun and take care and I didnt get a reply. I really dont know what she meant by all this and was this final thank you comment made to express a 'thank you, and goodbye'? I'm really confused.. Help!