Is OTHER wrong in the post ? POST : 
So to start off I didn't know she had a boyfriend in the beginning while we hung out a fencing tournament. So I asked her to go see a play. The play got cancelled and we ended up walking around town and then having a VERY casual dinner not a romantic setting what so ever. Although I'm into her I didn't make any advances and never got that warm sort of exciting feeling from someone coming close to you. But since I was interested in making advances I asked later that night if that was a date. She explained that she had a boyfriend this caught off guard and I apologized etc. She then sent me her number (we only had Snapchat prior) and mentioned hanging out again over break. So I figured why not as long as I'm not making advances I'm not that asshole right? When we hung out things went pretty welI and we talked in a restaurant for two  and a half hours. I felt like it would be better if I brought up the boyfriend and tried to ask questions (also I was curious and this is where I feel that I am the asshole) most of the time she just changed the topic. Eventually he called and she was somewhat rude to him asking if he  needed anything or if it could wait. She then explained that he goes to a college very far away. She is very careful not to be touchy in ANY way and I have been too but she mentioned catching each other up on all the movies one of us hasn't seen and this seems like a recipe for disaster and heart break. Should I just slowly back off and only talk when we happen to see each other or am I okay to continue as long as she is okay? I feel like if I was the guy I would NOT be okay with this but I would also not want to be a controlling dick.

(TL;DR New friend has a long distance relationship not sure if I'm the asshole for hanging out with her.)