Be honest, how often do you stalk your exes on social media? And why?

I'll admit before I got married I was involved with 3 wonderful ladies, the first one was getting her divorce the same time I was, the second was married and the third was married too, it didn't work out with any of them and I met someone else and married her, years later I still think about how things would been if I would've married any of the 3, I've tried looking them up on social media but to date I've only mange to find one of them, I consider these last 3 past girlfriends as my all time best and still get those feelings when I think about them, the question would I change things if I could with any one of them the answer is no.