I pulled a prank on my at the time future wife.
In Manila, I went to plug in my future wife cell phone charger into the outlet. The outlets were at the same height as light switches. I acted like I was being electrocuted, and my future wife stood there flapping her hands and going, "oh, oh, oh, oh...."
I stopped, and she flung herself into my arms, face buried in my chest. She said, "You scared me", I said, I'm sorry". She said, "Don't do that again", I said, "I won't". She looked up at me, tears in her eyes and said in a very tiny, quiet voice she said, "I hate you".
That was the closest thing to a proposal as we got, I guess. Coming up 8 years.