As has been stated,you are too young to be engaging in such things and the only thing you can do is admit your mistake and accept the consequences like an adult.
I know many kids your age do this but that is no excuse and it makes you look very trashy.Not saying you are but that is the first impression you have created for his father.
As has been said these things come back to haunt you and a good rule of thumb is never put anything on the net that you wouldn't want your mother to know about.