Speaking about her husband Seal to InStyle for its February issue (on newsstands Jan. 15), the cover girl expresses her uncompromising devotion to the singer – from her decision to legally take Seal's last name, Samuel, to her resolve not to bat her eyes at other men.
"I don't flirt," she says. "It's disrespectful to your husband. I would never do that. I'm very devoted, and he's the same."
To confirm their commitment, Klum, 36, and Seal, 46, hold an annual wedding ceremony and renew their vows. "We're still for a minute and stare into each other's eyes," she says.
She and her kids all have Seal's surname – though she continues to use Klum professionally – so "my husband, the children, and me, we're now all one."
With children who are 5, 4 and 3 years old, and another who is 4 months old, Klum also expresses her joy with motherhood, describing giving birth as "blissful."
"Everything is about love when you're pregnant,” she says. "The baby's being loved by you; the baby's being loved by your husband, by the grandparents, by your children. And you're being loved by everyone."