1987, I was 19, invited a girl (from the same tech highschool I had just finished) to watch Crocodile Dundee (not a date). Yes I know, this is a 1986 movie, but in the age when movies travelled in reels, releases took time to arrive in Brazil.
Arrived at her home, she was still showering. Her older sister (25 years old, just out of college, a Pharmacist) invited me in for a coffee.
Had a coffee with her and their mother. I was mesmerized by older sister. I had given up dating girls about my age, because too much immature fantasy romance. This girl was independent, bewitchingly intelligent, and beautiful.
I was too intimidated to invite her to join us. In my mind, she would answer "oh, sorry, my fiancee is about to arrive" or something like that, which would have crushed me.
So the younger sister finally shows up and invites her to join. She (thinking I was interested in younger sister) asks me "is that ok?" "YES YES Please!".
We went out as friends for some months, then dated for 7 years, while I went through college and got a stable job. Married in 1994.
We're still together, two "kids" (23 year old Nurse degree and 25, 1 year to finish med school).
I did a lot of awesome things in life, but so far the most extraordinary, happened by pure chance, life changing, fortunate, unlock secret ultimate quest event was meeting my wife.