"Just tell me that you'll marry me, James," she says, "then I'll let you stop!"
Really? You say you are flattered but say that she should get to know you more than this before getting married...
"I don't know," she says skeptically, "maybe when we're married I'll just have you do this whenever I want sex..."
You assure her that you can give her great pleasure if she will just give you a chance!