Glad you had a great day Charles.
Your hot girl tale reminded me of a friend at works successful lunch ploy that I'll share in case it can actually work twice in a row. Short term ending, they got married a year or so later. Although, you may not want to ask about the long term.
Same scenario. He payed for lunch, she promised next time but it never came about. So he brought her some nice takeout lunch to work one day he noticed she was working through lunch to catch up on stuff. Here is what she later said was the key....
She was very hesitant in pursuing a work relationship and wasn't so sure about the guy either. She said she would have been quiet embarrassed if he had just plunked himself down and took it upon himself to joined her for lunch in her cubicle but he was smart and very discreetly brought her the lunch and after she thanked him, he said he was off to the break room to eat his. After a few minutes, she abandoned her work and joined him in the break room.
I'm not necessarily saying this will work, but hey, it's a nice gesture in any case. And if you end up with soup on your head, I live much too far away for you to come punch me in the head.