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Chrissy Teigen And John Legend Play Charades

The Tonight Show Starring Jimmy Fallon on YouTube

What's the foundation of marriage?

Well, I'm a product of divorce and I've never, myself, been married, so not sure I'm a pro by any means, but I'm going to use my limited knowledge to go ahead and guess love. Like, that's a no-brainer, right?

But what comes as a close second?! I'd say trust.

If you can't trust your significant other to tell you when, I don't know, your fly's down, then who can you trust?!!!?!!?

John Legend and Chrissy Teigen obviously have the whole love thing down.

I mean, look at this ADORABLE Instagram Chrissy posted celebrating where they first fell in love.

And if that's not enough for you, check out what John did for Chrissy's big day.

But do they trust each other?!

I mean, can they really tell each other absolutely anything in that sort of "I trust you to tell me absolutely anything" way?!

I would have always guessed yes, but their recent stint on the "The Tonight Show Starring Jimmy Fallon" proved to me once and for all they are the greatest couple of all time. IT'S A FACT.

Jimmy teamed the couple up for a game of charades against himself and Chelsea Handler (who is my favorite author of all time, so obviously she was also hilarious and awesome).

There was a whole funny part when Chelsea was acting out "Singin' in the Rain," and it was basically a dead give away but Jimmy could just NOT TAKE THE HINT.

But the best part was when John was acting out "The Little Mermaid," and Chrissy noticed his fly was down.

Now, some lesser people would have just let their significant other look like an absolute fool on national television, but NOT Chrissy Teigen.

No, John's model wife called out, "Your fly is open!" and quickly rushed over to zip her hubby back up.

Also, it didn't help she was yelling "little sexy" at him as her guess while he danced around with his fly down...

Needless to say, the Legends won despite the whole fly zipped down snafu.