Ryan Gosling and Michelle Williams: 2010
This one comes with a big question mark, because the Blue Valentine co-stars remained frustratingly evasive throughout 2010 when poked and prodded about their rumored off-screen romance. In a December 2010 interview with ABC News Nightline, Ryan quipped, "We are doin' it creatively."
He added more fuel to the fire in a subsequent interview with UK’s Guardian, saying, "Most movies when you're acting you're trying to block out the lights and the trailers. Here, you had to remind yourself you were making a film. Michelle and I found it hard to take off our wedding bands when it was over. We'd built this castle and then had to tear it down."