My Dad is not my biological father
I am a 27F, and my mom and dad are divorced. They divorced for the first time before my mom got pregnant with me but were still seeing each other. My mom found out she was pregnant and they remarried and had my brother later, before ultimately divorcing again. I have three more siblings from their partners after their divorce.
I have done 23&Me in the past and recently decided to try Ancestry as well. My mom is on Ancestry and I wanted to compare the breakdowns in DNA. My dad has never done any of those tests but I was eager to make him do one, too, although he hasn’t been able to do one yet.
I just found out today that my dad isn’t my biological father, because my actual biological father has done ancestry too. My biological father is someone who lives in the same town we are all from.
To say I’m shocked would be an understatement. I have no idea who this man is but the resemblance is unmistakable. After looking into him more, I learned he has two daughters that are younger than me as well.
My dad was absent for my childhood after I entered elementary school and came back into the picture when I was in high school. We have had a tumultuous relationships at times since then, but I am closer to him than any of my other siblings and I have supported him through his struggle with alcoholism drug addiction. Despite his shortcomings as a father, I love him very much and none of this changes that.
Can anyone offer any advice? How do I approach this subject with my mom? How do I tell my dad I am not biologically his? That my youngest brother who my dad had after he divorced my mom is not biologically my sibling? That his granddaughter isn’t biologically his?
I know family is who you choose and not necessarily who you are related to by blood. I just feel completely blindsided.