Hooray! A recent study and report proves that teens who think - wait! Sex is God's wonderful gift to us BUT reserved for our partner in MARRIAGE - not for DATING! Studies show that teenagers loose respect for themselves, others and stop doing well in school when they give in to the lie that sex is okay before marriage. What's even worse is that recent studies have shown that some children as young as 10 may be having sex and ruining their lives! That breaks my heart! 
Hey! If you are thinking about it - It isn't worth ruining your life and displeasing God.  If someone is trying to make you do it - don't!  Run!  They are not your friend, they just want to use you. If someone HAS made you do it - get help and tell someone. You are not to blame for what they did to you.

If you have already done it or experimented with it... Stop now.  God will forgive if you repent (realize it's wrong and decide to change) and ask his forgiveness.  You can work to rebuild your reputation and your witness for Christ - it will take time.  The longer you wait... the harder it will be to humble yourself to God's will for your life.  Satan will try to convince you that it's too late, and that God won't forgive you!  HA!  Satan is a liar!  God promised in, 1 John 1:9 " If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness."