Do you think she likes me?

So me and this girl have been talking for a while now, and I’ve been noticing some signs of her possibly liking me. The only problem is she has a boyfriend. I met her about two years ago before she got a boyfriend, we stopped talking for a while, she got a boyfriend, and we ended up talking again just this year, which is where we are now. she has been showing major flirting signs and whatnot, but I’ll just describe what happened today.

ok, so today was our last day of gym class. most of the class sat out since there was really nothing to do. I sat in between two of my friends and she sat with a group of her friends. when she sat down she looked up at me and smiled and waved. Later on she had went to the bathroom and my one friend I was sitting next to moved over to the other side to text so the teacher wouldn;t catch him. when she came back she noticed that he had moved, so she got her stuff and sat right next to me. I didn’t even ask her she just did it. We then started talking and she started saying stuff about her family but never once mentioned her bf. later we started messing on our ipods and I could tell that she was trying to get really close to me. Later on that day (in our other class) we all stood up at the door waiting for the bell, and one of the classmates had asked her a question about her boyfriend in front of me and her response was “i really don’t care”. She also just recently started walking with me down to the buses, and i noticed that she walks super close to me (i almost tripped on the curb since she was walking so close) she also slaps me on the arm sometimes when she’s about to talk about something exciting. that day her boyfriend was down at the other end of the hall and I asked her if she wanted to go and walk with her bf and she said “nope, i don’t care”. She also just asked me for my number on facebook.

Remember that she has done a lot of other stuff in the past besides this, this was just today. I’m not certain if she has feelings or not since she has a bf, but judging by this do you think it could be possible?