I too am the father of a 14 year old daughter (15 in a few weeks)and I would not be letting you get anywhere near her at your age. You are an adult and she is a minor, end of story. No matter how pure your intentions it is fraught with danger for all concerned.

The welfare of my child is my responsibilty and I would not be exercising that responsibility properly if I allowed it. Too much can go wrong and this way no harm can be caused.

Another very pertinent point is how fickle girls of that age can be.
You could easily have your heart broken and she would be happily dating another guy.

Take the best path for all concerned and find another girl who is not "jailbait". Test the water again when she is 18 if you need to.

I hope you are able to make the right decision, its hard but a part of living. Best of luck

Grumble