Valentine's Day: This is the one day when infidelity and extra-marital affairs reach their peak

For many, Valentine's Day conjures up images of love, romance, flowers and chocolate.

But for detective agencies across the United States, the romantic holiday is a boon for business as it is the ideal time for a spouse to catch a cheating mate.

"Valentine's Day is the biggest day of the year for private investigators," Tony Delorenzo, of Private Detectives of America, a New Jersey-based company, told AFP.

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