And as you said, "it was an easy 15 bucks". You were very aware of what you were doing: easy money off your "friend", instead of friends not minding a few dollars missing here or there.
He stayed with me for a week last year. We had a big bbq. I stuffed him full of akaushi beef. I didn't ask for a dime, nor would I ever.
I guess you maintain friendships with an excel sheet handy? good for you I guess
/s
Between electronic transfer and just settle the debt later, isn’t really an excuse…
You charged a $15usd (~15%) fee when your friend was desperate and willing, when the standard fee for such transactions is at best 0% and worst 5%.
I much prefer zero stress - if money is tight, we just don't do expensive stuff, or steal the bill before they have a chance to pay. Mostly that means we stay cheap until we can safely cover multiple people if needed (running your safety-buffer low enough that you can't do that is a terrible idea anyway).
OP increased the cost of forex from 0-5% to 15% when his "friend" was desperate.