Most Helpful Guy
By talking and hanging and getting to know a guy. It takes time. Some couples form faster then others. Their has to be attraction and chemistry.
Most Helpful Girl
The only 2 boyfriends I had in high school weren't even in my school. One was a guy I knew from primary school (we went to different high schools) and started dating at 16. Then the other boyfriend I had was when I was 18 and he was a year older. I met him through a mutual friend.
So yeah that was my experience more or less. I went to a tiny high school with 30 kids in total in my year so I didn't have a lot pick from! My suggestion is just meeting as many new people as possible, going out to parties and taking part in social activities as much as you can.