How I Met Your Mother, Season 4

[After Ted fails to deliver his 'cold-blooded' speech to Stella because he just saw Tony and Lucy happily greeting her.]

Future Ted:
And that that was it, that moment I wasn't angry anymore. I could see she was meant to be with Tony. Kids, you may think your only choices are to swallow your anger or throw it in someone's face. There's a third option: You can just let it go, and only when you do that is it really gone and you can move forward. And that kids, was the perfect ending to a perfect love story. It just wasn't mine. Mine was still out there, waiting for me.