Kevin Costner Only Started Drinking Coffee in 'Last 12 to 15 Years' (Exclusive)

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Kevin Costner tells PEOPLE in an exclusive interview that he started drinking coffee later in life

"It's not an old habit. In the last 12 to 15 years, I finally came to coffee," the actor says

Costner is continuing his partnership with Green Mountain Coffee Roasters to mark the company's new Father's Day campaign

Kevin Costner wasn't always a big coffee guy.

In an exclusive interview with PEOPLE, the actor, 70, speaks about his love of the caffeinated beverage — and how it was actually something he started drinking later in life .

"It's not an old habit. In the last 12 to 15 years, I finally came to coffee," Costner, who continues his longstanding partnership with Green Mountain Coffee Roasters , says.

"Coffee starts my day," continues the Horizon: An American