How do i get this boy to stop loving me?

ok i broke up with him a long time ago. hes is so whipped and obsessed with me. he writes love quotes about me on his status on facebook and he comments on my status when its about and a boy im in a relationship with (he seems shocked and depressed). he's extremely annoying. he's telling me about how he wants to marry and have 7 kids. im only 16 god dammit. he won't leave me alone and i would like for him to get over it and move and hes only reminding me of a horrible past.