I have to agree, it does sound a little obsessive--perhaps slightly more toward the extreme. People who have "stalking" tendancies usually are prone to fixations (which can be a trademark of OCD). I'm not certain if I've heard of anything exactly like this--I would recommend picking up a copy of the DSM-IV-TR (The Dianostic and Statistical Manual of Mental Disorders), and doing a little personal research. Maybe you can find a diagnosis that hits home? Be sure to share your thoughts with your therapist. And remember, it's the treatment that's important--not the label given to the problem.

Best of luck,

~Alexiel