January Jones, Ashton Kutcher

On-screen, Mad Men's January Jones has had to endure husband Don Draper's indiscretions. Off-screen, she had to contend with ex-boyfriend Ashton Kutcher.

"[He] was not supportive of my acting," the 31-year-old actress told GQ. "He was like, 'I don't think you're going to be good at this.'"

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The Golden Globe-nominated actress dated Kutcher when she first moved to Los Angeles in hopes of transitioning from modeling to acting.

Despite Kutcher's criticism, Jones credits him for helping her career. "He only has nice things to say now — if anything, I should thank him," Jones told the magazine. "Because the minute you tell me I can't do something, that's when I'm most motivated."