how does jealously work?
I think one of the worst things you can do to yourself, is looking at a picture and then creating your own story from it. Let go, and let them live their lives.
My ex has always loaded lots of pics of herself all over the net. She needs people to tell her how beautiful she is. So you see this very nice pic, with the big happy smile. Yet, I know that deep down inside her is a huge hurt, that never goes away. I studied the disorder and tried so hard to be there for her. Yet I was always told how little I care and do.
In the end, I deleted 3 years from my life. Everything that was connected to her in some way.
Move on, and forget the pics on the net. Ignore them. They not real.