Re: Lesson to be learned?
I don't really notice anything that you did wrong. Some things could have been better, but you didn't really hurt yourself. She's being receptive so that's good. The only thing you need to focus on is your frame.
Think of your frame as the way you look at the world. That you are surrounded by this bubble on how you view everyone in this world. Even yourself. Positively or negatively are broad examples.
You have to get her sucked into your frame and playing by your rules. Such as with the part about the 50 cents comment. It wasn't bad per say, but her teasing you and you completely accepting that teasing is falling into her frame. It's not a very big frame so no worries. But you'll need to know how to gain control of the frame for the more important stuff later on. You could've added "... I'm a big boy now! But don't worry. One day you will get there also."
Your frame is that YOU are the prize. That she wants you...in a bad way. And you'll only allow her to be bad with you if she meets your expectations. Have this in your mind and all your words and actions will be spot on.
"All things are subject to interpretation. Whichever interpretation prevails at a given time is a function of power and not truth."