it truly depends on what you're looking for in a relationship. If you find a guy/girl on the same page as you, usually on something like not having sex until marriage. You have a easier time connection emotionally and lasting.
However since guys usually have a very impulsive sex drive, relationships don't worry due to cheating, or just jealously.
Plus guys get mad at how girls work, instead of trying to understand that girls are different and getting over it.
Of course everything i said can also be looked at vice versa, where the girl has an equal sex drive connected to emotional feelings, and gets mad at a male's lack of emotion towards certain subjects.
Anyways with a stronger form of discipline than others, yes, relationships can work just as well as an adult relationship, if you think about it, they're both the same except adults have seen more therefore have more intelligence on the subject. If children are willing to not have to know everything to know what they want. They can work just fine
@hollie - You're not exactly considered a "worked out" relationship in my opinion, considering you're still 19. I'm sure you haven't gotten marriage and started a family. Maybe you have though, and i apologize in advance if that is truee