You can't know why he really did that. I have for the most psrt stopped checking FB even though my W still has me as a friend. Yes the pics of us are gone from there now. It's him just trying to " forcefully push" you out of his life and out of his head and like Mishka said it really has nothing to do with you. Just remember sometimes when people push like that they get tired. Let him keep pushing for now while you detach and work on you.

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Drew