so I'm in grad school, and iv been in this class with a girl for four year. iv started really liking her recently, and we got kind of close. we both were in relationships before. I dont know what her situation is now, she still talks to her ex in front of me, but she hangs out with me even if he is there. her family and her exs are now family friends. we have alot of the same interests and stuff and we get along really well. except i dont know if she likes me back or not. i was drunk and told her i liked her once like two years back and she said she wanted to stay friends and there was never really any awkwardness and we were still friendly. i started getting close to her in the middle but her ex kept acting up and i wasnt sure if she was still with him or not. but now im sure shes not, but i dont know if she has feelings for him or not. iv hinted multiple times that i like her, and im pretty sure she knows. shes fed me ice cream with her hands recently, if that makes a difference, maybe a sign. im not sure exactly what to do. how do i find out if she is really interested? or is she just using me? shes always up for hanging out, and she wants to meet up in l.a. over the vacations. not sure if we should just hang out or shud i take her on a date, shud i tell her? we went out for coffee once before, and it was fun. but that was it. and she didnt let me pay.