I would never, ever date a redhead. (Well; not if it's a woman, anyway. I could fall for a redheaded man.)
There's a simple reason: I'm a redhead.
Now; I know that sounds like a really silly reason, but I think wanting to be with someone who embodies what you want to be (in my case a woman, but still the same, so... A redheaded woman) you'll have a relationship based on a desire that's mainly outright jealousy.
If you feel that may be the case, that that is what attracts you to her, or if you even feel there's the possibility of that being it, then...
I wouldn't.
Bút.. Fair's fair: People dó fall in love, regardless of other stuff. Doesn't make it easier, of course, but.. What's it worth? And is it love? Is it loneliness, or a longing for a magic mirror? Whatever the case:
Be careful with yourself. It's not just her feelings on the line, you know. But... Don't be too careful, either. It's all the break-lines that eventually make a heart beautiful.