The clip, for new single 'Secret', sees the pair frolic in bed as mums and dads do best.
Heidi, 37, said it didn't take a lot of acting to produce the steamy scene.
"It's the story of two people in love," she said.
"My husband is what I always wanted and never thought I would have." "I feel so lucky to have found my husband especially at the time when I did," Klum tells Us. "He is both what I always wanted and never thought I would have."
"The song, the movie, it's the story of our love," added Seal, 47.
The pair have been married since 2005 and have three kids together - with Seal also playing dad to Heidi's daughter from a previous relationship.
"I feel so lucky to have found my husband especially at the time when I did," Heidi said. Nawww!
