need help figuring this HB out

[eye4aneye9]

i met this girl while i was in the weight room working out and she asked me to help her work out... im in college by the way...i dont see her that often and when i do she is on the run or with alot of friends..she has told me again that we need to workout out and whenever i see her she always says hello...how do i know if she is really interested and how do i approach the situation??