There have been a lot of celebrity couples over the years, but while they are always interesting, it's the couples that almost happened that really catch our attention. One of the most famous couples that could have been in the 90s was John Travolta and Kirstie Alley. They starred in the Look Who's Talking trilogy together, but each of them have admitted that it was nearly something much more. Alley is currently taking part in Celebrity Big Brother U.K. where she is in a house with a bunch of stars. She was telling them all about her past romances,