I read a really nice one over at midnight whispers by
draccone called Seduction Of The Willing. I really loved it and would love to read more that are similar to this one. You know both are rich it's just Justin is wealthier than Brian. Another thing that would be good in the fic is Justin insisting on taking care of Brian. Brian acts as if he does not like it, but in truth he likes it.
Edit: There is only 4 suggestions in the comments. Any more would be appriciated!