After all, we're talking about the first person we had a crush on, or kissed, or cried over, or had sex with, or took home to Mom, or maybe even married. No wonder we're curious.

Perhaps we want to ponder the road not taken. Or maybe we're searching for forgiveness — or vindication. If we are single, or unhappy in a current relationship, we might be looking for someone who was attracted to us at one time because, so the theory goes, they could be attracted to us again.

That's all fine and dandy. But I warn you: You are playing with fire.

Read the whole article at the WSJ site.

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