Stalking my ex would be boring. He sits at home and plays video games while soaking up government hand outs.
That's just a titch too stalky.
As long as you dont physically look through their windows or contact them it's not that bad.
wallop yourself over the head with a large mallet before it's too late
really stalking is not a good thing.
Society generally frowns upon stalking.
Who does this ex remind you of that you need to understand what attracts him so much?
Dunno, but I've been there, done that...