@MMarciano,
I agree! In order to remain friends - they'll live next door after all - Morgan should turn it over to Brian. If they haven't paid the rent by the 10th then
Brian will be the bad guy and not you two. Also, if they have a water leak at 2 am in the morning, they should call Brian and not you.
My landlord years were not worth the trouble, it was a constant hassle, no matter who rented the house.