Hey! I'm a 16 y/o girl and I just went on a cruise in late March! I have been on 4 cruises, 2 as a kid, and 2 as a teen. I have always gone to the youth program/ teen club! Cruise romances are very possible, especially on a 2 week cruise (you're so lucky!). My biggest pieces of advice: Go to the teen club the FIRST NIGHT for the first event (usually a "meet and greet" type of thing around 8:00) and be friendly and outgoing, remember that even if you are shy back home, no one knows that, so just turn to the person next to you and say hi and introduce yourself! No one knows anyone else either, so you're all in the same boat (literally haha!)!
I have TONS of info and am totally willing to answer any more questions about cruising as a teen, so feel free to email me at firstname.lastname@example.org