One, 3 years isn't that big an age different at all. It might seem like it but age isn't always a problem for some couples especially when it comes to something as small as 3 years. If it were something like 6 or 7 then maybe but it's different for everyone and every couple...

Two, gratned I don't know the girl but you're a great person and I would think you might want to give her a little more credit. Let her decide whether or not you're in her league or not. The online thing is...we'll I'll just say be safe, careful and cautious reguardless of what you feel. And lastly again you might want to let her decide if she likes you or not before jumping to conclusions. For all you know she likes you as much as you like her, don't shoot yourself in the foot and dismiss her before you even get a chance to really find out if she's into you.

If it's just a crush then you'll find out sooner or later and you'll get to know her more with time so I say keep getting to know her take it slow and don't sabotage yourself. As someone who makes a habit of it I can tell you 9 times out of 10 it's totally uncalled for and that one time it is called for is never the one you regret. It's the chances you don't take that haunt you.

Good luck!

Thanks SMG. You're right about everything. I do agree about the three years thing but I'm 16 and she's 19. I just don't know if matters more when you're younger.