Most Helpful Girl
honestly a lot of girls don't text back explaining they are not interested anymore etc etc because so many guys DONT LISTEN. they hear what they want to. or if she says nah I'm busy, or don't really like you they interpret it as oh she is playing hard to get..or ill try again next week maybe she will change her mind. so honestly sometimes girls learn that jsut to ignore is the easiest way. because in a lot of guys mind they seem to think if she replies she must be interested in some way because guys seem to only reply to girls when they are interested or want something from her so they think it works the same way.
the reason for her sudden lack of interest could actually be a number of things. quite possibly she could have already been seeing someone and was using you as a distraction or temporary rebound. however when the guy she really liked was interested or got back with an ex she no longer needed you or simply lost interest in you all together because her infatution or love for this other person over powdered it. when someone really likes/ loves another person basically nothing you say or do will change that.