I think christians would benefit from courses in dating. Learning how to behave around the other gender. Both in groups and in pairs.
I have seen marriage used far more as a heavy burden heaped on young people in christian circles than anything else.
For example, I think it'd be really healthy for a church with 5 guys and 5 girls in the youth group to arrange casual dates over 5 weeks rotating couples each week. No pressure or expectation of a relationship. Learning how to interact with the opposite gender without awkwardness. Each person knowing it is simply social, not some unwritten contract to marriage. Knowing that next week, they don't posses or own each other because there will be another purely platonic date with someone else.
Preceded with basic explanation of human psychology and physiology, they needn't be afraid of natural physical, chemical and hormonal changes. Rather, they will learn how to be master of them instead of being mastered by them.
Dates would be public, chaperoned depending on age and encouraged to discuss a wide range of topics. Those teens involved would be taught to learn mutual respect, boundaries and how to be confident in themselves and around others.
In life, we learn and grow from a basic level and then mature to greater things. No one is born knowing how to run, ride a bike, spell or read. We learn all these things. Why do we treat such an important area as marriage as though it's an exception.
Friends should be able to be friends without having pressure or heartbreak if they don't get married. Friendship is just that. But if it develops to mutual attraction, then it should be treated as such. A time to learn about each other within a healthy context of respect, love and boundaries. If they then grow to find they are compatible, then marriage could come up to be discussed.
The disney version of love at first sight then happily ever after is so destructive in the real world.
Just a brief overview of my observations and opinions.