Just realized my mom lied to me about my dad cheating and I don't know if I should tell him
Me and my dad have always been really close, I'm actually adopted on his side, but he has always treated me as his own, and I see him as my real dad. We are very similar in body language and interests, the way we both like the same things, we love talking about politics, science, music and truly all that there is to learn. He taught me pretty much everything I know. One day my mom stops me at the airport as we are flying home, and tells me my dad slept with another woman while we were on the trip. I was about 15-16 when this happened. I think seeing my dad as that kind of person gave me the shock I needed to realize how sad the world could truly be, and I started seeing everything, especially my dad- much different. A couple of months later she leaves to go to another state and stayed there for a week, she told me that apparently she went to sleep with this really rich guy but they were really tired and never ended up doing anything. And I guess this made me numb, but she would also comment every now and then on how my dad was miserable trying to impress her again by wearing her favorite color...
I am now 21, and was thinking this all sounds really weird, even more since I asked my parents if they were in an open relationship not too long ago, and they both said no with a good bit of shock in their faces when I said I thought they were.
I miss the relationship I had with my dad before I thought he was a cheater, but I dont know if I should talk to him about it or I guess break the news to him?