The Hollywood couple - who raise four children together and have been married for five years - have signed up for a new reality TV show and will travel around the US giving advice to couples.
A source said: "Heidi and Seal have one of the strongest relationships in showbiz so it only seems right they can use their experiences to help others."
The show is tentatively titled 'Love's Divine' and is a spin-off of Heidi's show 'Project Runway'.
Last month, Heidi and Seal marked their fifth anniversary by renewing their vows with an intimate sunset ceremony on a beach in Costa Careyes, Mexico.
Speaking about their annual vow renewal, Heidi said recently: "It's our time - a lovely family time. It's about remembering this moment of love we gave to each other and reinforcing it.
"It's so special to us, something we love and something our children have gotten accustomed to. It's like, 'Hey, Mom and Dad love each other and they get married every year!' "
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