Prior to that, he dated Vanessa from 1999 until 2003, and they share one child.
Vanessa took to Instagram to share a snap of her 19-year-old son Kassius in the car on his way to the studio to watch his dad hit the dance floor.
But holy sh-t, I am in heaven getting to do what I love with the man that I love.
Kassius was seen rocking a black button-down and black blazer, as he donned blonde tips in his hair.
The 90210 star is appearing on season 30 of the long-running competition show, partnered with his girlfriend.