Christina Aguilera makes a mess when professing her love to husband Jordan Bratman - she leaves lipstick marks all over the bathroom.
The Dirrty hitmaker walked down the aisle with music executive Bratman in 2005 and the pair welcomed son Max Liron three years later (08).
But the singer ensures she leaves her mark on Bratman when trying to prove her love - writing romantic messages in lipstick on the mirror and the shower.
She tells Britain's Cosmopolitan magazine, "We've been married for five years now, and I think the secret is in always keeping it interesting. You have to make time for yourselves, even if it's just for doing something small like having a picnic on the patio, or a nice dinner at your favourite spot. It's good to treat and surprise each other too. I leave little lipstick marks on the bathroom mirrors for when he wakes up, and little notes written in lipstick on the mirror and in the shower. Little notes, little cards, little 'I love yous' here and there - just to keep things alive and fun."