William was 17 years old, but he was a young man who fell in love easily. He wasn't a heartbreaker; he just fell in love too quickly and got tired just as quickly when his feelings weren't reciprocated. So yes, at 17, he already had a long list of ex-girlfriends, although he made up for it by being incredibly social with everyone.
It was at school that his heart leapt out of his chest when he saw a girl who caught his attention in the hallway. After talking to her during every break for at least a week, he realised he was in love while playing the guitar before class in the school garden.
"Right! No more talk... At the first break I have, I'll run to her, give her some chocolate and tell her to wait for me at the end of class so I can sing her a song with my guitar and declare my love..."