<human>: Can you give me the gist of the text in a nutshell?

Usually, she's a very quiet girl in class and doesn't talk that much to her classmates. But, when she talks to me we are always sarcastic and teasing each other and she seems completely comfortable talking to me.  One time, her friend told her to shut up because she was talking to me during class despite the fact that I was trying to not carry on the conversation.

Problem is... she has a boyfriend.  According to two classmates of mine.  But she has never mentioned him to me.  There is this "friend" that she often refers to but I'm pretty sure it's her bf.  It seems like she's going out of her way to hide him from me, so she probably thinks I don't know that she has a bf.  

If she wasn't with someone, I would've already asked her out and made a move.  I don't know much about her relationship and I don't know if she is interested in me.  But, I am indeed interested in her.  I don't know what I should do now...
<bot>: Me and this girl get along quite well but she has a boyfriend.  But it seems like she's going out of her way to hide him from me.