in any relationship, when trust is given, a certain amount of respect for the implied responsibility is expected
it allows the relationship to advance, doesn't matter what the relationship is, could be any relationship
the awkwardness comes from assuming without confirming that certain liberties in commercial terms come along with the added trust and advancement of the relationship
just because my neighbor gave me the keys to his garage so I can borrow his lawn mower from time to time doesn't mean he is going to give me a discount from where he works, might but you would have to confirm instead of assume