Does she only think of me as a "brother/friend"?

Alright… she calls me cute(recently in front of her boyfriend… which I’m pretty sure was a slip-up), gives me hugs, but screams “don’t touch me” when my friends barely scratch her. Called our first hug “special”? I thought they were like candy… Played one-sided 20 questions; thought I was leaving for a bit, then said “that’s good for me” when she found out I wasn’t. The oddest thing is that the girls she’s a part of are VERY CONSERVATIVE(don’t touch/talk to other men when you have a boyfriend)... she seems to be breaking all the norms around me. I wasn’t much interested in her when this all started, but I’ve grown to like her. Very fixated on me when I’m around; was afraid to directly ask me for my number… or didn’t want to send the wrong message. I don’t know; this kind of girl is pretty rare; she’s beautiful, smart, bubbly, etc. She obviously likes my appearance and personality. Other girls have counseled me and pretty much settled on she likes me, but has a boyfriend, so if I respect her I shouldn’t do anything. They told me to be happy with the attention and keep to myself. Or that she likes me as a brother/friend. Man… she’s just doing all this stuff while I have done absolutely nothing. I’m wondering if she wants me to push her boyfriend aside or send her a single signal or something like compliment her appearance once like she does to me so many times, but I’ve been told that it would be wrong since she has a boyfriend. They are sooo conservative…

And… I recently remembered that this has happened twice before in high school(girls, with boyfriends, taking interest in me, to the point of people gossiping “Doesn’t she have a boyfriend?”) with me having shown no interest in return… Maybe she’s just going through a case of Radiohead’s “There There.”

Why do I attract women with boyfriends? :|... and why would a woman with a boyfriend constantly compliment another man’s appearance and focus on him all the time when he’s around?