Is it a good sign if he deleted his ex-girlfriend from his Facebook?

I've been dating this wonderful guy and we've been taking things slowly. I noticed he deleted his ex girlfriend, her family and friends from his fb account after we had a more intimate date. He deleted her comments as well as some pics he had that she was in. Does this mean anything? Is it a good sign?
Is it a good sign if he deleted his ex-girlfriend from his Facebook?
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