i'm no expert (by a long ways).
sounds like this girl might be keeping you on the wayside just in case type of deal.
nothing wrong with being cordial (nice guys do indeed finish last, some of us know this from experience). and there's nothing wrong with being friends.
but let's all just remember, the devil is a woman. FACT!!!
best wishes to you.
Adopt a Chief Mr. Andy Studebaker, bitches!!!