I really am not following that though. Everyone has or had a FB at one point in time. The craziest people in the world had FB. Murderers, rapists, pedos, etc.. I don't think having a FB account proves anything.
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@Desirous but even though I disagreed with her about the use of tinder while in a relationship, she comes across as being more "normal" whatever that means than some of the people calling her out. You really can't say for sure who is normal or who isn't.. and what IS "normal" these days anyway?
Life is a gamble. Keep your guard up at all times. Read the signs, learn from mistakes.. That's all you can do.