In the Catechism of the Catholic Church is explained that "the intimate community of life and love which constitutes the married state has been established by the Creator and endowed by him with its own proper laws.God himself is the author of marriage." The vocation to marriage is written in the very nature of man and woman as they came from the hand of the Creator. But for most, the issue of dating involves "romantic attraction and desire." Therefore "dating" must be approached by what the Scripture says regarding romantic desire and marriage, the only relationship in which romantic desire is to be fully expressed. If "dating" is defined as two single friends of the opposite sex doing things together for fun without any attraction or romantic desire or intimacy involved at all, there is no issue to discuss regarding dating. The Bible describes and gives directions concerning friendship.
They must cultivate their friendship (soul), their sexuality (body), and their spirituality (spirit) in marriage.
Proverbs gives several characteristics of friends and friendships.
Prov.17: 17 says, “A friend loves at all times.” Prov.18: 24 says, “There is a friend that sticks closer than a brother.” Prov.27: 6 says, “When a friend rebukes you, that rebuke can be trusted.” Prov.27: 9 says, “The pleasantness of having a friend springs from his earnest counsel.” Prov.27: 10 says, “Do not forsake your friend.” These verses bring out the fact that the Lord blesses friendship and encourages us to develop them.
However, the Bible does describe three kinds of relationships with the opposite sex and gives certain characteristics of each relationship (there are others such as parent/child and sibling, but they don't clarify the issues of dating).
One kind of relationship the Bible describes is friendship.