Paris, France: Various shots of love padlocks attached to the railings of the bridge 'Pont Des Arts' as symbols of love

Black and white footage of a happy couple giggling and drinking under a tree.

Darwin Beach, Australia: Silhouette of romantic couple standing close together on beach talking whilst looking at sunset in distance

Paris, France: Young couple touch their heads together then man takes photograph of female sitting on wall of the Place de Chaillot, with the Eiffel Tower (La Tour Eiffel) and the road running underneath it seen in the background

Darwin Beach, Australia: Silhouette of close back view of romantic couple standing close together looking at sunset in distance

Darwin Beach, Australia: Silhouette of romantic couple standing close together looking at sunset in distance under palm tree blowing in breeze on beach

Paris, France: Couple talking closely to each other leaning on wall at the Place de Chaillot with Eiffel Tower (La Tour Eiffel) behind them, man hugs then kisses woman as tourists walk past

Rwanda: A baby gorilla on its mother's shoulder in a forest. The mother and baby put their faces together in a tender gesture.

A young mountain gorilla suckling from its mother, camera tilts up to show the mother's face as she's feeding. She looks thoughtful.

Couples dancing in the open air.

Havana,Cuba: Couple walking along shore at dusk holding hands, with waves breaking onto sandy beach

Brown bear mother and its three cubs walk by a pond. One of the cubs runs nearer to the camera, rises on its hind legs and then quickly runs back to its mother and siblings.

Brown bear mother and its three cubs walk by a pond, all looking very happy.

Paris, France: Back view of couple leaning on wall at Place de Chaillot looking at the Eiffel Tower (La Tour Eiffel) in front of them, the woman is leaning her arm on the man as they talk

Malawi: Two white doves perched in a tree next to a brick house. One of the doves then flies off.