i broke my own heart...

Good and lucky me because I have the freedom to choose and decide for myself. In your case, some times it is not bad to take risks and fight for the one you love. However, it is not also bad to listen to what your parents say. I say so because when we are in love or very much in love, we are blinded with the truth that the person may not be the right person for you.

I would also suggest to also ask for forgiveness, but be prepared as he may have already moved on or not ready to accept you back due to achy heart. As for you Dad he may still be upset, but let's face it Dad's love is unconditional and he may need sometime and if this guy proves to be the one, then it will make things easier for your Dad to digest. So basically time will tell with all three. Good Luck

Just tell him how sorry you are for making such a wrong decision and that you want him back. BUT are you sure this is the best thing to do? Your dad might get mad at you. Think of the consequences and if you are ready to take it, then you can risk it.