(CNN) - Former President Bill Clinton is speaking out about his decision to change his personal stance on same-sex marriage.
In an interview with CNN's Anderson Cooper, the former president said that while he still believes the issue should be left up to the states, he is no longer personally opposed to same-sex marriage as he once was.
"I was against the constitutional amendment to ban gay marriage nation-wide, and I still think that the American people should be able to play this out in debates," Clinton said. "But me, Bill Clinton personally, I changed my position.
"I am no longer opposed to that," he added. "I think if people want to make commitments that last a lifetime, they ought to be able to do it."
The full interview will air on Anderson Cooper 360 at 10 p.m. ET.