Hi well I would think that two people would meet and get to know each other first before a sexual liaison is initiated, because sex means to join together, Genesis 2:24. If you are not ready or not old enough to handle marital issues then you will not be able emotionally and often financially to get out of a union easily if you have mated already.
Normally people think the wedding is the time when the union began, but actually it is the sexual relationship that confirms the marriage. People must understand how strong the sexual union is or you will only be trapped into something unwanted. Taboos of gay sexuality are very real, and people are often stuck with someone who has strong gay feelings that they have no intentions of abandoning, Romans 1:26-27. It may be very well to avoid sexual contact and get to know someone well enough before you consider settling down them. It is not in human nature to avoid fornication but must be taught, 1 Thessalonians 4:3-7.