#9. John Travolta and Kirstie Alley
John and Kirstie are both huge stars in their own right, and kicked off their friendship on the set of “Look Who’s Talking” in the 1980s. Although the two admitted that they were initially very attracted to one another, they never acted on their impulses due to Alley’s marriage at the time. After the heat of passion cooled, the two became great friends who no longer see each other romantically.