I suppose I mean how would she take it, now that she has a boyfriend ~ and how might he take it?
Also, is it likely to make her more wary of your friendship and therefore more likely to keep her distance from you?
Hanging around with her around college, if you are not a student there, might have the same effect.
Popping in to see her might be ok, but, if she is happy with her boyfriend, visiting regularly might not have the effect that you are hoping for.
On the other hand, if she likes you, and discovers that her boyfriend isn't all she had hoped he would be, then she might like to have you there to turn to.
You are going to have to read the situation very carefully, so that you are there for her as a friend, without being too intrusive regarding her relationship with her boyfriend.