Well, there's only one way to truly find out how they feel, pal and that's talk to her. Explain how you feel to them and ask how they do. Now, there's a good possibility nothing might come of this, and that's got nothing to do with your age or who you are, it just may come as a shock to her if she hadn't seen you the same way. If you want, you could go about it gently, see if there are any tell-tale signs, smiles across a room, compliments, hugs or whatever. But ultimately, asking and talking is the only way to find out. It's just unfortunate that it can be the hardest way as well :P But remember this, you don't get nowhere by not trying. Given your arge, it won't be too serious (sorry to sound patronising there), but it'll give you experience for the future. And finally, good luck with it!