Alice Cooper says Johnny Depp and Amber Heard are "very much in love."

Amber Heard and Johnny Depp

Amber Heard and Johnny Depp

The legendary rocker, who recently returned from touring in Brazil with the actor, their band Hollywood Vampires and their families, says the couple couldn't be happier after trying the knot earlier this year.

Asked about the newlyweds, the 67-year-old star said: "They were very, very much in love. They're doing great."

Alice admits their trip to South America was very emotional, as they also distributed 250 hearing aids while they were there.

He told PEOPLE.com: "Johnny and Amber were in there putting hearing aids in.

"Johnny, Joe Perry, Sheryl my wife, and I are actually putting these things in their ears. People are hearing for the first time, and there was not a dry eye in the house. It was little kids, I mean, we got to put the hearing aids in and go, 'Hello,' and the kids go like this '[wow].' "

Meanwhile, Alice says his own marriage to Sheryl Goddard is still going strong after 39 years together.

He added: "I love her. We never get any publicity because we never get divorced."