"I wouldn't advise it," he said in an interview with USA Today.
"Not if you're trying to take your work seriously and keep your head in the game.
They dated on and off for the next couple of years before becoming engaged in early 2002.
Nick and Jessica starred in their own reality show "Newlyweds: Nick & Jessica." They got married and they divorced in November 2005.
After modelling on and off since the age of 4, Ackles began to concentrate on an acting career in 1996. Rhodes, Sweet Valley High, and Cybill before joining the cast of the NBC soap opera Days of Our Lives as Eric Brady in 1997.
He won a 1998 Soap Opera Digest Award for Best Male Newcomer and went on to be nominated three times (in 1998, 1999, and 2000) for a Daytime Emmy Award for Outstanding Younger Actor in a Drama Series for his work on Days of our Lives.
He also auditioned for the role of the young Clark Kent on Smallville, a role offered to actor Tom Welling instead.
Chris Evans (The Perfect Score, Not Another Teen Movie) and 7th Heaven star Jessica Biel dated for two years before splitting after they appeared in last year's Cellular.
Evans said the experience made him rethink his stance on working alongside lovers.
More About Age: 43 Birthplace: Burbank, California, United States of America Profession: Actor Credits: CSI: Miami, But I'm a Cheerleader, Invasion, The Young and the Restless Third Watch, more Le Ann Rimes and Andrew Keegan dated from 1998 - 2001.
More About Age: 38 Birthplace: Los Angeles, California, United States of America Profession: Film Producer, Actor Credits: Independence Day, 10 Things I Hate About You, O, Camp Nowhere The Broken Hearts Club: A Romantic Comedy, more Also Ranked #94 on The Greatest '90s Teen Stars #12 on America's Worst Ex Boyfriends Rumor has it that Le Ann Rimes dated Jensen Ackles from 1997 - 1998.