My ex-boyfriend and I have to share a workspace. I left for the summer and came back and I saw him when I went into work. His mouth literally dropped when I saw him and he didn't know how to react when he saw me. he's still super petty. won't speak to me, look at me for really long time or look me in the eyes, or avoid me at all cost and it's really unprofessional. Even after year why would he still act like this even though he's the one that broke it off with me? It's getting ridiculous.