How to make someone block you to Facebook and to their phone?

[Att]

I'm seriously in love with a guy to the point of stalking him all day in his profile. I'm not friends with him anymore. He blocked me. I can't control myself sending him messages. It's making me crazy!!! I really fell for him hard but he already told his love confession (it's like a marriage confession saying "I'm the love of your life") to another girl in public in Facebook so it's too late but I don't care if he has another girl and even if she's in the same university (that is prestigious) and the same program as him. I want to be his girlfriend.

If I don't stop contacting him, I might be punished badly by the law. But I can't help it!!!

How to make someone block you to Facebook and to their phone?