Ex girlfriend of 2 years dumped me for someone else about a month and a half ago. I went NC right away. Long story short, i get a text out of the blue bringing up happy memories and asking how i am. I responded as if i was completly unaffected by the breakup and that i was happy and moving on. She said she had it had been bothering her that i hadn't talked to her. I kept it short and told her i had to go, she seemed upset when i told her i had to go. Where do i go from here? I'm trying to rebuild my attraction and win her back and i don't want to mess up my chance especially since she's still with the rebound. I know girls want what they can't have and they want a challenge.