Confused about a girl

Sorry for the long story but please read, a lot of information. I need to get as much help os possible. So a year ago in October 2012 we went to this trade school thing for a two week tryout.Met this girl there and we became very good friends for the time there, I kinda liked her then but we just met and we were only there for two weeks anyway and lived in different towns. On top of that I did have a girlfriend at the time from hometown but not anymore. Over the past year I have been talking to this girl very much and texting a lot and even called each other best friends. Mailed each other birthday cards and christmas cards even for graduation. We both planned on attending the trade school as a full time student starting in September 2013. I kinda wanted to eventually become for than just friends but its but not rush into things. Unfortunately There is someone else in the picture who also likes her and she likes him to but I still feel like she also likes me based on signs she showed in the past. I am not sure if she knows that I like her in that kind of way based on things I have said in the past such as telling her before that everyone should just stay friends and we are all too young to date (I feel that some high school and college relationships are taken to seriously) I think she may feel that I just wanted to be friends but at this point I kinda want more than that. And Unfortunately for me she got together with the other guy (also was in the tryouts a year ago) but mistake when someone asked if they were together and thats how that happen part of its my fault because I kinda introduced each other a year ago and told them they should go out as I was already with someone then. She did show many signs that she liked me, telling she misses me and cant wait to see me again over the time we were away, texting me good morning and goodnight and always showed interest in what I talked about either on phone or on text message. Is there anything I should do? Should I tell her how I feel? I feel like if I dont tell her I will regret it then its too late. It would be hard to forget about her for a few reasons. She has always been there for me in the past year and was always wanting to help and talk any time I needed someone to talk to. And two we both live in the same school 24/7 so we see each other everyday. I dont know what else to do but tell her, and see what happens.

Good day Appel1993. It sound like you have deep feelings for this girl. Look I am a lady and the truth is all we want. But make sure of all your facts before hand. If she doesn't feel the same way it could put strain on your friendship. But if you don't tell her you might lose your love of you life. Its a gamble all around.

This is a hard thing to do. I dont want to ruin anything with our friendship in anyway, but if she does feel the same way she should know I do too. Based on things I have talked to her about in the past may make her think I only want to be friends and may not know about this. I have talked to her about previous relationships and that could give her the idea I only want to be friends. We have been very good friends over the past year since we met however never saw each other for a year after that because we lived in different towns 100 miles apart. Ever since we left last year I got this feeling she liked me the way she would talk. Last week when we met again after a year we started having good times again, she even wanted to hold hands and hug. However when someone asked her if she was dating someone who else she kinda liked they said yeah I guess. Last year another girl was talking to her about stuff when we came for 2 weeks and she told me that she does like me but didnt want to say anything because at the time I was already with someone.