The age of consent is the age at which a young person is legally able to understand and agree to consensual sex. There are some important laws regarding sex and young people, and these are usually known as the age of consent laws. In most countries, until you reach this age it is illegal for somebody to have sex with you, however old they may be. Sometimes the law is slightly different when the partners are of a similar age, but there is usually still a minimum age below which sex is always illegal.
Although some young people may feel that they are mature enough to engage in a sexual relationship, others may lack the emotional development to deal with this or to feel confident enough to say 'no'. Age of consent laws are there to protect young people from being sexually exploited by adults.
The age of consent varies according to the country and in some places the age of consent is different for boys and for girls.
This, too, is different, depending on the laws in the place where you live. Some places count things like kissing as sexual contact, and other places only count sexual intercourse. You should check out the laws in your state or country.
Statutory rape is the crime that someone can be charged with if they have sex with a person who has not reached the age of consent but who agrees to have sex.
Sexual abuse is the term for an adult using their age or authority over a young person to have any type of sexual contact. There is a difference between this and two young people who are in a consenting relationship. If you are a young person involved in an abusive relationship it is important to talk to someone about this.
If you are worried because you know of a young person who you think is in an abusive sexual relationship, you must think carefully about what would be the right thing to do. Telephone helplines and sources of help in your country will be able to advise you.