Paying friends when I jerk off to them

So, I've started doing something really weird which turns me on extremely. Whenever I jerk off to any of my female friends, I've started paying them in some way to the other. Maybe paying their phone bills or some other sort of payment where I can be anonymous.

They don't know where they are getting the payment from but I like to send it as a token of gratitude and my servitude. Even right now I'm jerking off to a friend while looking at the debit notification from my account.