stalkergitis 

a unknown syndrome that occurs when a person who feels the need to stalk someone of interest all of a sudden especially when its out of their character.

My ex boyfriend Mike has come down with stalkergitis he follows everywhere.

stalkergitis by Guiseppe Danger! May 1, 2010

Stalkertise 

To formally stalk someone with the intent of getting some.

I stalkertised this girl i met at a club, but she didnt go for it, and instead i got beaten.

Stalkertise by mel =) October 6, 2006