If your 16 year old does not already have a curfew, now might be the time to set one. Beyond her nightly curfew, you might set rules that dictate when and how much she can date -- especially if you have concerns about her schoolwork or other responsibilities that might suffer.
We have nearly 30% more underage pregnant girls this year compared to the last year...
It's because of this urban legend that has gone around forever.
Based upon this rule, the only time that a man can date a woman his own age is when he's 14 years old (because half of 14 is seven, and seven plus seven is 14).
In other words, All knowing God will bless you with your wife when your ready to be her husband. It's great that her parents would not mind if you dated her. A twenty-two year old man is considered an adult, but a sixteen year old is not yet an adult.
You may want to wait until she is atleast eighteen.