Like 2Married said, I agree-FB and other Sn's aren't real. They are what people make them, a show of life, an unreality that can be twisted to brag, to torment, to lie.
Part of my life was greatly affected in this way and what helped me dramatically was finally just shutting it all down for myself. I just don't want to be connected to anything they do.
It helped me also to force myself to stop searching-it was part of my PTSD or anxiety that came from what he did that I was obsessively searching for either or them or her tribe online and it was causing triggers, but I didn't understand it for a while. Now I do other things with the time and don't even miss it anymore. Pictures for me are hard copy or just on my computer and I make sure he doesn't have access any more.
If there's a way you can begin to stop looking, it's a recommendation I will make. FWIW, when the impulse used to come, I would find something else to do with my hands and mind or contact a friend I had left. It also helped me to spend time on SI because I could type and be on the computer, "working on things" but not the people who hurt me.
And yes, though it's hard to hear, the advice for me is also to move my thinking away from anything in the past and carry on. Easier said than done, but I'm trying.
It also helps me to think that every time I don't think of the past, I won a victory for myself and not them...they weren't able to get me down. Then I remember that time, rather than something someone did.
I think more of myself and my victories than the wrongs that have been done.
A person is a person, no matter how small. -Dr. Suess
Perserverance and spirit have done wonders in all ages.