Open that door just once before you marry the woman you love, and show her what is behind it! It'll give her a shock maybe.
But it'll be better for you both in the end.

Don't let there be any locked doors between you and your wife! You're too young for that.

And if she's the right sort, it won't make a pin's difference to her love.

Women are like that, thank God!" He spoke with the utmost earnestness.

He was evidently keenly anxious to gain his point.