Background on me: I'm a 3rd year med student. When I started med school, there was a girl my year who I was acquaintances with but didn't know super well. We became better friends 2nd year because we studied for some classes together, and I got to know her better and realized she is a lot of fun to hang out with, great personality, sense of humor, etc.
At the time, I was actually in a relationship that ended up not panning out. I didn't really know anything about her relationship status because she never mentioned a boyfriend. Fast forward to 3rd year: I struggled with injury problems and gave up running after starting med school, but decided to get back into it. It turns out that she is also a runner and we started doing some runs together. This is coupled with the fact that we are hanging out more, studying together, etc.
Meanwhile, a while back (before we started running together), I overhear her talking to a mutual friend of ours about her boyfriend. He gets brought up occasionally when we are in group settings among other classmates, but when I talk to her one on one, she doesn't mention him though she does know that I know about him. I know he is a PhD student at the same university that we're med students at and that they have been together at least 1-2 years but I have never met him.
Anyway, this girl and I seem to have a real connection. We run/study/hang out together a lot, have a lot in common, text quite a bit with each other, get along great humor and personality wise, and so on. The big caveat is that of course she is in a relationship, and what seems like a secure relationship... but I cannot help but wonder if there is something there, given how much we talk and get along. Are there any other ways I could gauge her potential interest in me? I don't mind staying friends but I just can't help but wonder...