I think I may be depressed, but I don't know how to get help?

Maybe you want to see the counselor at the new school. It sounds like the urge to find a mate. If you didn't feel incomplete you might never get there. However there are other forms of social interaction than dating and marriage. Just join a school club. Without the pressure of grades or rules of the classroom you may find it easy to make new friends. You might not meet your mate or then again you might. Mostly it's about being good to people, and if you committ suicide you will be no good to anyone. A few little changes can lift you out of the depression.