The `King`s Speech` actor is flattered when he receives attention from other women but insists he will always be devoted to his Italian wife Livia Giuggioli - the mother of his sons Luca, nine and Matteo, seven - because she is so attentive to his needs.
He told Britain`s Hello! magazine: "Oh, I appreciate the smiles I receive on occasion from rather beautiful women. But my heart is reserved for my lovely wife Livia.
"Livia is there for me when I need to have a good cry and feel very sorry for myself. She gives me a kiss and a cup of tea, and the world feels good again when my children run up to me for a hug."
Colin - who also has a 20-year-old son from a previous relationship with Meg Tilly - also insisted his achievements shouldn`t be celebrated more than his parents and other people who do charity work.
He said: "My parents and many other people have worked hard for humanitarian causes and they are real heroes. They deserve to be hailed for their incredible self-sacrifice."