A girl (19f) that has a bf maybe interested in me but still unsure.

I met a girl at an event from a club and we talked a decent amount. We exchanged numbers and she ended up joining me and my friends soccer team. She texted me and offered me a ride so I was like yeah sure. We text a decent amount. Went out a couple nights with her, her boyfriend and his roommate who are super chill. Me and her are taking the same math class and I texted her about working on it together and I assumed we were going to meet at the library but she was like “how about we go to your place?” I was like yeah sure. My roommates all left before she came over because they assumed that something was going to happen. We ended up just talking and working on homework and at the end she wanted to see my monitor in my room and she asked my how often my roommate is at the apartment (I share a room with him). Last week she texted me “it gets a little lonely tho”. With no context.