When I was 15, I had a girlfriend who was 16. She also had five older brothers and three of them owned motorcycles. Naturally, she knew how to ride all of them.
One day, she suggested that we take her brothers 1965 Sportster XLCH for a ride and I started to climb on behind her. She stopped me and let me know that since I was the guy, I would be the one driving. After I explained that I didn't know how to ride a motorcycle, she gave me a quick two-minute explanation and sent me down the road on her brothers bike to make sure that I understood the instructions.
Without a doubt, I didn't fear for my life when riding the bike but rather feared for my life if I screwed up and dropped her older brothers bike.
Fortunately, the only hitch was when I stalled and needed to restart the bike. When I kicked it, the recoil threw me off the bike and onto the pavement.
When I got the bike started, I rode back to her house, she got on the back and I haven't stopped riding since.
When I had a drivers license and her brother went into the Army a year later, I bought the Sportster.