Howard: You're my wife. You're supposed to be on my side.
Bernadette: I'm always on your side.
Howard: Then why are you trying to take this away from me? Being an astronaut is the coolest thing I'm ever gonna do. If I stop talking about it, then I'm just...
Bernadette: Just what?
Howard: Just plain old Howard Wolowitz again.
Bernadette: Plain old Howard Wolowitz is the best guy I know.
Howard: You're just saying that.
Bernadette: No, I'm not. I married him. On purpose. Come here.
Howard: I love you.
Bernadette: I love you, too.