Meanwhile…
"Her birthday is coming up in a few months, and she'll be officially a lady. Once that happens, do you think you're the only person who will want her attention?"
"Trust me. Not only guys our age will line up for her with customized flowers, exquisite chocolates, and lavish gifts but also those young adults who were looking for a good match."
"Don't give those guys any chance. Cosette might be very annoying, but she can be very mature if she wanted to be. She's sure about you, which means she had seen her future with you, but just like you said, making big decisions in your early teens might end up as a painful scar."