I met a cute girl on a youth group's trip who was obviously attracted to me (my friends, both male and female confirmed it). After we got to know each other, she suggested watching a movie the next evening. We did and she stayed over (her room was next to mine, so it wasn't that big of a deal), but I was too afraid to make any sort of move. The next day she still wanted to spend time with me, but was really cold and uncommunicative. On the way home she then started heavily flirting with another guy (funny bloke, but somewhat overweight). I thought to myself "well, that's it", however the next day (when the trip was over and we were back home) she started texting me. At first it was going well, but then she became cold and stopped texting quickly after. The day after that she texted me again and the same thing happened. I am aware of some mistakes I made and probably unaware of a lot of others. Can anybody tell me, whether there is still hope and if so, what I can and should do? Many thanks in advance.