John Travolta and Kelly Preston
They found a strong attraction toward one another on the set of "The Experts" in 1989 but were in relationships at the time. Two years later, the two became experts on each other and tied the knot. Hey, who wouldn't fall for Danny Zuko?
The couple has three children: Benjamin Hunter Kaleo and Ella Bleu. Travolta and Preston also grieved when their son, Jett, who died in 2009 due to a seizure at the age of 16.
Travolta has said "having kids gives a mandate to make your marriage work ... the kids are a big motivating factor."