What should I do?

So I'm a girl and I liked this girl who at first everything was good. We talked flirted etc.the one day her ex can back into the picture and now her ex wasn't gay just bicurious and she told me how she was happy that she didn't livr here etc and didnt want to get involved again with her. So we ended up nottalking and she blocked me. kso of course my heart was broken but I had to move.padt it. I come to.fins out that I wi be in the same place with her in a few weeks and I want to look hot & make her wish she never did anything to me. What should i do? I have been working out.