There's someone I like a LOT, definitely more than I should

And it's freaking me out!:lol: But that's not why I'm writing here. I don't even know where to start...

We go to the same lectures and sit next to each other and I really like her and she probably doesn't hate me either but I've no idea if she's gay or not. At first I was sure she was but now I don't know anymore. I've tried asking her question that would have made it clear for me but she answered them in a way that told me nothing. Obviously I'd like to be friends with her because I really like her but at the same time I want her to know that this is who I am... I've started going to LGBT events so if we're going to be friends, she should know about this. I don't want to lie anymore.

How could I say I'm gay without making her think I like her like that? Because I can pretend that I don't have those kind of feeling for her and I'm sure they'd go away if I knew for sure she wasn't gay. So that's my dilemma. What should I do? (I have a few possible scenarios planned out but I'd like to hear what you'd do in my place.)

I've been thinking about inviting her to one of these LGBT events. Should I do it?:icon_bigg I feel like I really need to point out that this is a one sided thing, she definitely doesn't feel more than friendship for me and even that is in early stages so I don't know... Okay, I might have answered my own question just now but.. I'd like her to know and to hear from her that she understands and doesn't condemn me or anything...