I'll admit that I have been stalked more than me stalking others. However, I have had a couple of men that I was super infatuated with in the past. I'm not sure it reached the point of me "stalking" them, but I did find myself trying to find ways to run into them or be where they were at similar times. In one of the cases, I started daydreaming about him maladaptively. That was quite serious because it affected my daily life! It got to the point where when I actually saw him, I was prone to dissociative symptoms.