What do you think is the proper age to date.

I think the proper age to date, starts from the age of 17. At 17-18 boys and girls generally pass their high-school. They become matured, and complete their adolescense. They then starts behaving like matured adults, and in a year or two, becomes fully matured to take up all responsibilities. Therefore this is the age, when they can detect the right and wrong, they can choose a correct partner to date. They also can take correct decisions, whether to date with the same partner again, or to stop. These are very important decisions, that girls and boys can't take at an age younger than 17. I feel that way.

I believe you have the instinctive protectiveness every parent should have towards a son or daughter. From an Islamic point of view extra-marital relationships are highly discouraged. A teenager is encouraged to maintain his/her virginity until marriage... Hope I added something to this discussion.