I'll sing to you for the rest of your life

Well, I never been a man of many words

And there's nothing I could say that you haven't heard

But I'll sing you love songs 'till the day I die

The way I'm feeling 

I can't keep it inside

I'll sing a sweet serenade whenever you're feeling sad

And a lullaby each night before you go to bed

I'll sing to you for the rest of your life

The way I'm feeling

I can't keep it inside

No, I can't keep it inside

I Can't Keep It Inside
  Benedict Cumberbatch
(August: Osage County ost)

I just don't know how to deal with the tenderness of this scene.