Should I tell my Dad that he isn't really my Dad?

thats a very hard decision to make. if you tell him, you risk ending the relationship with him and your mom and possibly with you. even though he loves you a lot of men will just turn into jerks and walk away. your mother may never forgive you and it could cause a ripple between you and her. on another note, if you are his only "child" and he gets "fixed" then finds out, he may regret not having a child of his own. its a tough decision to make. i also feel that it shouldnt be your decision to have to make but your mother should have told him. he deserves to know. what if you needed an organ or something and she wasnt a match??? im surprised he didnt find out at the hospital. i would personally myself tell him because i feel he should know but be aware of all the things that could go wrong from doing it. be careful, think it out fully. good luck