Lenny Kravitz is coming clean about two-timing former girlfriend Nicole Kidman.

The rocker, whose romance with the Oscar-winner ended after he was photographed with another woman, admits in a magazine interview he has a knack for breaking hearts.

"I'm a nice, charming guy, who can give a lot of love," he says. "But I'm also complicated. ..."

Kravitz took at least one thing away from the relationship: inspiration for the passionate song "Lady" on his new album, Baptism.

"Unfortunately," he tells Hello! magazine, "the story didn't end as happily as it does in the song. The reality wasn't quite as romantic, but this liaison was still a first-class inspiration."

Is he sad the relationship fizzled?

"A bit, yes," he says. "It's a shame, but you have to go on. Life doesn't stop because love has knocked on the door and decided to leave again instead of staying."