Dick Van Dyke Mourns Mary Tyler Moore's Death: 'There Are No Words'

Dick Van Dyke is feeling the loss of a friend.

After Mary Tyler Moore died at age 80 on Thursday, the Hollywood icon's longtime on-screen husband on The Dick Van Dyke show took to Twitter to express his sorrow.

WATCH: Mary Tyler Moore Dies at 80

"There are no words. She was THE BEST!" the 91-year-old actor wrote. "We always said that we changed each other's lives for the better."

em>Dick Van Dyke Show creator Carl Reiner opened up to ET on Wednesday about the special relationship the co-stars had. "They both admitted later if they hadn't been married to other people they definitely would have been a couple," Reiner revealed. "They were made for each other."

Addressing what he would miss most about Moore, Reiner revealed that it's her gift for performance.

WATCH: Mary Tyler Moore in Her Own Words: How the Actress Transcended Television to Inspire a Generation

"Her soft shoe. Her dancing and her singing, I just loved it every time," the 94-year-old director recalled. "I melt every time I saw Dick and Mary do it."

Last year, Van Dyke spoke to ET about Moore, where he fondly remembered the dynamic the two built off of each other while acting together.

WATCH: Mary Tyler Moore Dies: Robert Redford, Carol Burnett and More Stars Mourn the TV Icon's Death

"We became like an improv," Van Dyke said. "You could just tell us a scene and we could make it up. She read me very well, and I read her timing very well, and it was just such a pleasure to work with her."

EXCLUSIVE: Dick Van Dyke Reveals He Thought Mary Tyler Moore Was Too Young to Play His Wife

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Early on in the program, Van Dyke admitted he first thought Moore was too young to be his TV wife.

EXCLUSIVE: Dick Van Dyke Says He Once Thought Mary Tyler Moore Was Too Young to Play His Wife

"I said, 'She's a little young, isn't she?' 12 years," recalled Van Dyke, noting the age difference. However, Reiner reassured him.

"I said, 'Nobody's going to know,'" Reiner shared.

WATCH: Mary Tyler Moore's Last TV Appearance Was an Epic Reunion With Betty White, Valerie Harper and More Co-Stars

And eventually, Van Dyke would grow to appreciate their chemistry, on and off screen.

"I had a real crush on her," he admitted.

Watch the video below to see the outpouring of love from Hollywood in the wake of Moore's death.

Mary Tyler Moore Dies at 80, Celebrities React

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