I always believe that courtship before marriage is very necessary. It is through courtship you will know the kind of partner you have. Courtship that involves sex is now a problem in the christian doctrine. But I want to point out that if you dont have sex with your partner how can u know if he can father a child or she can be pregnant? If he is impotent or if she is infertile. Or do u want to believe in God will provide for us? I am not against pre-marital sex but it has been a problem between couple who cant give birth today.