“Lord knows I’ve suffered heartache. But Daryl was by far the most painful of all,” Kilmer wrote in his new memoir “I’m Your Huckleberry” (via People.)

Kilmer, 60, and Hannah, 59, began dating in 2001 after meeting on the set of “In God We Trust” but she later moved on with Neil Young, whom she tied the knot with in a  top-secret wedding ceremony in August 2018.

The “Top Gun” actor went on to share his thoughts on Young, noting, “Neil Young, I always loved you, but I’m afraid I hate you now.”

Meanwhile, Kilmer had previously dated big names like Cindy Crawford, Cher, and Angelina Jolie.

He revealed that Cher, whom he dated in the early ’80s, was really there for him. She especially came through when he was diagnosed with throat cancer in 2015.

“Once Cher works her way inside your head and heart, she never leaves,” he wrote. “For her true friends, her steadfast love and loyalty never die.”

Today he is cancer-free after undergoing a tracheotomy, chemotherapy, and radiation.

He also opened up about his other exes, writing that after divorcing Joanne Whalley in 1996, Crawford helped him find happiness again.

And on Jolie, he said she was “perhaps the most soulful and serious of them all,” and, “When people ask what she’s like, I say she’s like other women and other superstars, just MORE.”