United Kingdom, May 29 -- Nick Lachey tries to "compartmentalise" his work life.

The 51-year-old star has been married to his wife Vanessa since 2011, and Nick has now revealed the secret to their happy marriage.

Nick - who has co-hosted 'Love Is Blind' alongside Vanessa for the last five years - told the 'Richer Lives' podcast: "I think the best thing you can do is not bring your work home with you. Which is tricky when you work with your spouse.

"I think we do a really good job of doing that, for the most part, but it's not easy working with your spouse sometimes."

Nick feels it would be easy to allow work-related problems to "bleed over" into their home life. However, the TV star has managed to "compartmentalise" different parts of...