What's the most effort you've put in to impress a girl/guy?

I told this girl if she dated me I'd stop smoking in 2 weeks. She didn't believe me but I convinced her to give it a shot. I stopped in 10 days. It was kinda cute because she used to keep a pack on her so that if we were out with people who smoked or I was stressed out she would surprise me with one.

What's the most effort you've put in to impress a girl/guy?
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