"Now you know why I'm still single," my thirtysomething girlfriend mused the other day as I complained about yet another disappointing date. "single men are all the same," she continued.

Robin Bratone, Ms. Bertine's maid of honor, said she worried that her friend's heart could be broken by a new widower looking for a shoulder, but not a commitment.

It is a worrying question which has crossed many a married woman's mind: Does my best friend have a crush on my husband?