There are so many pairings in this, I'm not even going to list them.
Without further ado, I present to you...
The Love Life of Joey Wheeler
It was a fine summer morning, and Joey Wheeler was walking down a Domino City street (he may or may not have been singing doo wa diddy diddy dum diddy doo; I was not there so I can neither confirm or deny), on his way to the Kame Game Shop to visit his best friend, Yugi Mutou. All of a sudden, he met up with another friend of his, Tristan Taylor.
"Joey," Tristan said seriously, "We need to talk."
"Nyeh?" Joey said in that characteristic way of his.
Tristan heaved a sigh. "I'm breaking up with you. I've been cheating on you with Duke."
Joey's heart grew heavy with sadness, but then he remembered someone else: Mai Valentine. That cheered him up a bit, until said busty blonde walked up and announced, "Joey, I've been cheating on you with your sister."
Poor kid just couldn't get a break, could he? But then he remembered Kaiba, who had just conveniently joined the conversation.
"Sorry, Wheeler, but I'm ditching you for my Blue-Eyes." And he licked said card in a very indecent manner.
So then, Joey turned to Yugi, thinking perhaps he still had a shot at love. Yami (who had his own body for some reason) laughed and said, "Oh, aibou, look at that, he thinks he can steal you from me!"
At this point, Joey was feeling a bit desperate. He turned to see who else was around, and he spotted Bakura; however, Marik flew in from outta fuckin' nowhere and clung to him, shrieking "MINE!" and snarling at anyone who dared walk too close.
Joey had begun to feel very depressed, when his cell phone rang. He answered it, to find that Jean Claude Magnum was on the line. "Joey," he said somberly, "It's over between us."
And Joey was like, "wtf we were never together."
Depression blanketed the teen as he realized that all the couples around him were making out, except for Yugi and Yami who were randomly having sex in public because they're kinky. Joey cried a river and turned into the Forever Alone guy from Memebase, and a Winged Kuriboh flew in and abducted him.
The end! :D
... Okay, seriously, that is possibly the most random-ass thing that's ever come out of my brain.