What are 3 magical words?

Please, thank you and excuse me

I love you.

Since so many great meaningful words been said, i'm gonna have to try to express from other perspective so I assume I'd choose

Love,loyalty,respect,

Pizza , Broads and Beer ! Shazam !

Please, sorry, thank you

Got your back!

Praise the Lord

and 

second choice: Go for it!

Throat Wobbler Mangrove

www.youtube.com/watch?v=tyQvjKqXA0Y