Peter Andre has posted a heart-melting video on Instagram which shows the incredibly close bond between his four children, Junior, Princess, Amelia and Theo.The 47-year-old singer uploaded the clip of his four children in a jacuzzi, with Princess adorably carrying Theo around.MORE: Peter Andre and wife Emily melt hearts with adorable video of son Theo in the snowAs Theo splashes around in Princess' arms, Junior uses the opportunity to squirt his three siblings with a water shooter, while Amelia