My ex and i broke up a little over two weeks ago, about a week after our break up he shows up where i work..he wouldnt stop looking over at me. i avoided him when he walked by or if i saw him i would turn the other way. and just a few days ago he ended up at my sisters work, which is all the way over on the other side of town, he didnt say anything to her, as far as i know he got where she works off of her facbook because seems to me he didnt go their coincidentally. when i messaged him about the two encounters he ignored my messages and have been ignoring my messages for days now. whats going on? help me please