Have you ever had someone involved being interested in you? and what did you do about it?

hello all....i am asking this bec as of late i seem to be sparking the interest of women who are involved. most recently, i had ran into a female that i used to knows sister. we had talked very briefly in the past. after getting her number(she seemed eager to give it to me) i started talking to her and she is w/ someone. i decided to text her on a few occasions but she always seemed to be distant. today however she texted me on her own for the first time. we also texted for several hrs today, which has not happened before. she told me that i am sweet and that she wants to hang out with me yet i cant get her to hang out it seems. sorry about the long story, your personal thoughts(especially ladys) and where u would go with things from here.