This game puts that hollow advice to the test, asking you and your partner to keep both of your characters on the screen at the same time. If one character advances upwards, and the other isn't ready, the bottom of the screen will rush up and suck the character you failed to communicate with into a bottomless void of death.
It's easy to ignore the other person not cleaning the bathroom when it's their turn, but you can't ignore your Luigi falling to his death off the edge of the universe while your partner bounces obliviously higher. The only silver lining presents another potential pitfall for your relationship, as you get to return from the afterlife in a floating bubble that follows your significant other around like a haunting reminder of his guilt in your demise.
"Youuuuuu killed usssss, Mario...."
B. Personal space
Even obnoxiously clingy couples will go insane if glued to each other 24/7, so everyone needs their own personal time and space, whether it's a woman's Sunday football-watching time or a man's scented candle and bubble bath time.
Guys and their "man time", am I right?
Many couples don't explicitly set aside these boundaries, they just fall into the habits over time, without realizing why.
That's why they'll forget to tell each other when one of them is trying to perform a delicate maneuver on a tiny platform, while the other, less skilled person leaps up to the platform in blissful ignorance and knocks their partner into the abyss. Falling into old habits, the woman will teach him to stay off the fucking platform the same way she taught him to respect her football time -- by yelling at him. Of course, that never works because he gets all hang dog and wounded.
"Oh my God, moooove..."