It's a scene from my all-time favourite movie, Love Actually.
Mark, played by Andrew Lincoln, professes his everlasting love to Juliet, played by Keira Knightley.
My heart breaks with every poster he shows her, knowing Juliet - married and very much in love with her husband - will never return his ardour.
Click here for the complete scene. I'd embed the video but everyone who mounted the clip has disabled embedding ... buggers.