While he first thought to turn the house into a mansion, the sentence he obtained gave him a better idea. "Timothy Melnick lives in this house with his roomates." Sure, with that he could effectively make them live in a mansion, but nobody said under which condition. What if they were just house-sitting for some rich but demanding people? Or worst, if one of his roommates was owning the manor but only housed them if they all accepted some unreasonable conditions?
His second idea was to replace ‘roommates’ with ‘girlfriend’ but, again, there was no more precessions of the conditions. What if it resulted in not having enough money? He could very well end up being expelled from the house in a few days for all he knew.
But that last doubt inspired him. Why if he used plural, turning the roommates into ‘girlfriends’? Obviously, if he lived in the same house with all of them, the girls would be okay him dating all of them at the same time, and they should be guaranteed to have enough money pooled together to pay the rent.
He changed the text accordingly and validated.