Despite their amazing six-year marriage, the model and reality TV star insists: 'I'm not white-picket-fence perfect.'
And she admits that her British husband's biggest complaint is when she tries to make him a cuppa.
'The water can never be hot enough for him, and only when the tea is just the right colour can you add the milk,' she says, laughing.
'Maybe when I'm 80, I'll be allowed to make it.'
But Heidi admits that her husband - and their four kids - are her biggest priority, even when her career is so hectic.
'Family comes first,' she told Good Housekeeping magazine. 'You're the only thing they have.'
Asked how her marriage to singer Seal has been so happy, she says: 'We love each other. We love our kids. We have fun with each other and in all the stages in our lives we go through together. There are many days where I don't want to put on makeup. I want to be loved just as me.'
She added of her husband: 'He's the most charming, loving, fun, gentlemanly, inspirational man I could have wished for. He always makes me feel I'm the only woman in the world.
'We may be parents, but we can still make time to be a couple. We like to have fun with each other - we do have four kids.'
But she insists love has not always been so easy. 'I've been married before. I've had boyfriends. I've been cheated on. I've been heartbroken. That's part of life, and it's part of figuring out who you are so you can find the right partner.'