Some people believe it is something determined before birth. It is usually not a choice. It is important to remember that being gay or lesbian is not something doctors think is abnormal. Our culture does not do much to support gay and lesbian youth. Sometimes, teens dealing with these issues turn to drugs or alcohol to cope with the pain they feel from society.
Some people have thoughts of suicide.
This is the time for professional help. If you are dealing with these issues, or have a friend who is, you are not alone. Counselors can help sort out the feelings. If you find a counselor who just doesn't understand, don't give up. Talk to another adult such as your school nurse or counselor.