Thank the Zuckerberg! Facebook Photos has finally stopped showing you pictures of your ex like a sadistic virtual friend. Until recently, the Facebook Photo Memories box had a tendency to throw up pictures of ex-girlfriends/ex-boyfriends with unpleasant regularity. Facebook’s algorithm picks photos to slap in the Facebook Photo Memories box by figuring out whose updates you’re most interested in but that can be a double-edged sword…