I have just found out that my DF is not my biological dad. It has come as a great shock to me and I am distraught. I have told my partner and he is so supportive. Not to drip feed but I am unsure if my DF knows and I am unsure if any elderly relatives know. My DM passed away a long time ago so cannot find out any details. My dilemma is do I ask my elderly aunts if they knew and try to find out who my biological father is. I would like to know. I more importantly do I tell my grown up daughters. They love their grandfather very much. As far as I am aware my parents had a happy long marriage. I somehow feel as I am betraying my DM by opening this can of worms but I dislike secrets thank you for reading