I can't get over my ex.

We were in a relationship for one and half years. I thought we were doing great. We used to fight occasionally like every couples do and sort things out and things would go back to normal again. But things turned out differently in the last fight we had which was 4 months ago. It was a big fight. We sorted it out but she was not acting normal. Three weeks after that she broke up with me. She said she had been thinking about it ever since we had the fight. When I asked her the reason she first said we don't have a future together(coz we are from different countries). I contacted her a few days after the breakup and asked again. She said she is sure she like me anymore--A totally new reason! She added I should not contact her anymore, I should only talk to her after I get over her and she is already over me. I was heart broken when she said that. Then I texted her a lot, hundreds of times. I got no reply back. Getting frustrated and angry, so I sent her some rude angry mails. But yet she won't reply. Its been 2 months since I last contacted her. But still I can't seem to forget her and move on. Then yesterday I sent her a casual message saying Hi, how is life going? But still no reply.
I don't what I should do to move on. I definitely need to talk to her and get a closure but she won't talk to me at all. I don't know what's on her mind. What should I do?