A friend of mine recently planned a surprise 40th birthday party for his wife. He secretly arranged for her friends to gather at her favorite bar, and booked her favorite local band to play. He even managed to get her younger brother to fly in from out of state for the big event. Needless to say, his wife was surprised and delighted. If someone who was only an acquaintance had planned that same party, it wouldn’t have been nearly as special. Her college roommate might still remember her birth date....