Panty Size Help

I went to buy some panties today for myself. I looked in several stores, and then I picked out four pairs of stretch lace knickers in black and pink. When I got to the till, the girl said, "Do you know you have two pairs size ten and two pairs size twelve?" I said it was a mistake and she said, "Well, what size are you?" Wow, she knew they were for me! I could feel myself becoming excited down there and very thrilled at the thought of her knowing my secret. She was very attractive and I would have given anything to have taken her panties home with me. Next weekend, I plan to go back there and ask her for help with sizes, hoping it goes further.

— Max, 45