Ex-girlfriend tried to ignore me as we walked by each other yet answered, why?

My ex-girlfriend broke up with me two months ago. On our monthly milestone, I got jealous about a facebook post where she appeared to be possibly... Show More

Updates:
Really, I'm curious about her behavior. It's been almost 2.5 months since the break up, I told her almost 1.5 months ago that I got it and best wishes. No contact from me since. She wanted me gone, I've been gone. We'd agreed to be cordial at work, so...