Do you think any of us haven't been there though? We have. We've all had the unattainable person we really wish we could be with at some point-and for whatever reason, it just wasn't to be. I wouldn't call you a kid either, I was married at your age and then struggling to deal with the aftermath of a car accident that crippled my right leg. You are a legally an adult, but you're still also a teenager. Biologically, you are a seething mass of hormones still and guess what drives attraction? You can't always divorce how you feel about someone as to why you feel that way about them, or that it could/would/probably will change, when you're in the heat of the emotions. I remember being 21 and having a crush on a guy I worked with cause omg was he hot and sweet and we really got along. (Yes, I was still married, no I did not do anything). We aren't trying to mock your own feelings, just acknowledge that really, it's something most people go through and get over.