well like indi said, it's definitely bad manners to remind him. have you thought also even tho he's a friend would there be underlining conditions. people start off enjoying the notion of giving but when issues occur they may call in that 'favor'. it's not intentional at the beginning when giving but it happens. i personally don't accept things like that unless it's family and if i do i find ways to reciprocate sooner rather than later so there is no power issue. i know it's thinking deeper....but i'm very protective of my independence.
Work like you don't need the money. Love like you've never been hurt. Dance like nobody's watching