If Foxirius was a relationship...

[Marty]

It would be the kind that ends very badly but then someone in the relationship gets a little obsessive creepy and stalky so goes about following you, shouting things at you from across the street, writing poems and shouting them up at your window...he just won't leave you alone.

This escalated to sever stalking and harassment, getting worked up when he sees you with other people and on the brink of a mental breakdown and an emotional disaster.

I think that pretty much sums it up (-_-)