i want to come out, but dont know how.

A few things; A.) I am twelve, which is too young for reddit but eh. B.) I would like to come out soon. I have known for a couple of years. C.) my parents don't agree with gays, but have openly expressed they don't give about what gays do. Aka; They don't agree, but let it happen. Should I come out at this age? How do I come out? I don't want to live with an evil monkey for the next ten years then come out. I'm scared they won't love me. Please help me. Sorry If I am breaking a rule or two, but I want help.