Your dad obviously has strong feelings about differing religions, so I think you really need to talk to them. Trust me, this won't be an easy conversation, so listen patiently. Don't let yourself get flustered or too emotional. Unfortunately, they may not see your side of the situation. They may say you're too young to know understand the problem. All you can do is explain how it feels to you. Tell them that your love has nothing to do with religion, it has to do with people. True love can overcome all. Hopefully, your parents' love for you will open their eyes and their hearts to your wishes.