<human>: Could you distill the essence of the text into 1-3 sentences?

Yeah so there's this girl I recently met at college I kind of have a thing for.  I was all set to ask her out the next time I saw her.

We've been distant acquaintances for a while, but we had a class last semester and started talking more.  We also take the same train home, so that's also given us a fair amount of talking time.  I always thought of her as that plain-but-cute looking girl that's really shy.  Now that we talk more, I've discovered that she's actually really easy to talk to, and makes for entertaining conversation too!

Anyways, I was planning to ask her out on Thursday (next time I see her), but I've come across some information that's confirmed that she is not straight.  However, I'm not sure if she's a lesbian or bisexual.  I do know that she's single though.  

Now that I think about it... she *is* rather plain.  She doesn't do too much to her hair beyond combing it.  I've never seen her wear lipstick.   I'm not sure if she wears makeup, but she has really nice skin if she doesn't.  She's usually sporting a sweater of some sort with jeans and her construction boots, but I always assumed that she did that b/c it was winter, and that was practical attire.  She doesn't dress very feminine, which is supposedly common of lesbians. 

So, how do I go about handling this?  I've come up with some options:

* Forget about her romantically and stick to being classmates

* Ask her questions to indirectly determine her sexual orientation

* Ask her directly about her sexual orientation

* Ask her out anyways

I feel kind of uncomfortable just saying "so... are you a lesbian?" in the middle of conversation, but on the other hand I'm going to feel fucking embarrassed if I ask her out and get rejected because she's a lesbian (mainly because I couldn't figure it out on my own).

Anyways, do you have any advice?  This is a throwaway Reddit, I am a regular.
<bot>: I was going to ask a girl out this week, but now I think she's either a lesbian or bisexual.  Bisexual is not an issue for me, but her lesbian-ism may prove troublesome. What do?