all sites track you, this site has a lot of cookies dumped on your system as soon as you get here and soon after. makes me wonder if I actually find them all or not. but yes, really sleazy to spy on a "friend"....... kinda sounds like stalking.
Sounds like your girl is cheating on you. Dude take it from me; you cant argue your way out of getting dumped, and the internet will not save your relationship.