I'm bi and I have a huge crush on this (same-sex) friend who, as far as my knowledge extends to, is straight. Which kinda sucks.

But, whatever, I've gone about my life. I haven't told her and really have no plans to tell her and we're still really good friends and I'm decently happy with that situation. BUT, sometimes, and it's a sub-conscious thing that I cannot stop, I flirt with her a little. You know, tiny things. I tell her her hair looks nice or disagree with her (in a flirty kind of way) when she's complaining about herself.

And that's all fine and dandy, but I've started to feel like she likes me, too. Which seems absurd to me. So I don't know if it's one of those things where I'm creating the she's-flirting-back part in my head or if she seriously is flirting back. But, other times, I just feel like the nerdy guy friend who says she's pretty and she says "Aw, that's sweet." (Which, by the way, she does say all the time. And which, also by the way, I am quite a nerdy person.)

So, I guess the real question here is: Am I making it up in my head?