Based on my experienced, I've got a boyfriend when I am only in elementary. I don't know if my boyfriend's parents and my parents only glad to tease us before. We know that our parents know that we are attracted to each other but its like, that it is only okay to them. But I know they have nothing to worry about that because at our age, all we know at that time is to play and have fun. They became strict to me when I am already in high school. 18 years above is the appropriate age for a very serious relationship.