Yeah and it sucked. I handled it by looking at what they've both done for me throughout my life, how they treat me, and recognizing that my mom cheating (with my father and my first stepdad, as well as stealing $90k from my father's mom) is between her and my father, her and my stepdad, her and my grandma. It really made our flawed nature hit home for me, but my relationships with them have not outwardly changed much. I haven't really dated since. I had a hard enough time trusting people before and I think this amplified it. My sister, on the other hand, blew up our family. She no longer speaks to my mother and has serious issues with my father's new wife, to the point where she can't even be in the same room with him. I believe it affected her much harder than it did me because she personalized our parents drama. Do whatever you can to not let that be you.