Sleeping with the enemy

"My boyfriend is working in my competitor retail chain," Linda confessed over her frappucino.

She obviously was taken what Lincoln said to the hilt: "Am I not destroying my enemies by making them my friends?"

Be wary of a competitor who wants to form an alliance. They may extract confidential information. This is corporate espionage and turn out to be not a mutually beneficial relationship.

Beware of Trojan Horses.