I think it's called "Clara".

No. No, you can’t… STOP. Please don’t go away. Please? No one’s ever stuck with me for so long before. And if you leave… if you leave… I just, I remember things better with you. I do, look. P. Sherman, forty-two… forty-two… I remember it, I do. It’s there, I know it is, because when I look at you, I can feel it. And-and I look at you, and I… and I’m home. Please… I don’t want that to go away. I don’t want to forget.

OH WHAT THE BLOODY HELL?! I will murder you for pairing these beautiful and happy gifs with THE SADDEST MOMENT.