03/22/2013 09:54 am ET

Couple Loses 500 Pounds In 2 Years (PHOTOS)

Marriage, any good therapist will tell you, is a balancing act.

For Angela and Willie Gillis, the act is easy. They've been best friends for more than 10 years, married for three. Their individual strengths balance the other's weaknesses.

They credit this sense of balance with helping them lose a combined 500 pounds.

Read more on CNN