Me and my ex have been on and off since we broke up mainly just talking in school and then a few months ago we’re good friends and she asks me if I wanted to have sex after I made a joke ab it. I went along w it and then she started getting serious and I planned a day to hangout with her. She then continues to keep pushing the date back until we end up not talking at all. Now a few months later I run into her then she starts snapping me and replying to my snaps within five minutes. I honestly can’t figure out what she’s doing because this on and off friendship/more has happened at least five times. Advice?