The actress confirmed that she and the Bon Jovi rocker recently split following a fight prior to last week's CMT Awards.
Richards and Sambora, who had previously dated after starting divorce proceedings with their respective partners, recently rekindled their romance.
However, sources close to the pair claimed that the Wild Thing star had recently ended their relationship for a second time.
During an interview on The Talk, Richards explained: "We aren't dating, but as lot of people have seen, I stay very friendly with my exes... All of them.
"We're friends, we went through a lot. Years ago we both lost our parents at the same time and [were] going through other stuff, so we'll always have a bond with each other and we will stay good friends forever."
Richards and ex-husband Charlie Sheen are now on good terms after a bitter divorce in 2006.
The Blue Lagoon star will soon make an appearance on Sheen's upcoming FX comedy Anger Management.