Ex is engaged but won't leave me alone? I don't understand

Carebear8593
My ex left me 2 times for 2 other girls. In Dec 2011. I told him to leave me alone and not to contact me again and that was final. He fought over it even wrote me a card at my school (we went to different colleges after hs). He would contact me almost every month and if not every month every other month. And every single time I would tell him to leave me alone. I do not like him anymore. He stalked me on Facebook even though I blocked him he admitted it. He left me after 3 1/2 years and got engaged to another girl within 3 months of knowing her. Why would he get engaged if he doesn't leave me alone? He keeps trying to see me and I always told him no. He even showed up at my work last year with his fiance. How do I get him to stop its not harrassment its just an annoyance. Help!
Ex is engaged but won't leave me alone? I don't understand
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