Welcome to (the title) *it's too long for me*

Three girls, three boys, and one big apartment. This is not one of your average cliche stories that are like: "There will be a tragic and bumpy ride but, they will be together at the end and live happily ever after. The end." NO. That's dumb and as I said cliche. In this story though, each girl has to get married to a boy that's chosen for her (basically an arranged marriage). Choosing a boy, and finding another boy is against the rules. What'll happen if a random girl breaks one of the rules in this marriage fiasco just for trouble? Is that even possible?