We (22M) Just found out from my best friend (22M) hooked up along with my wife (22F) while we were on and off 6 years ago. Nobody thought to tell me, I had to ask. Should I drop them both? They were both people I would trust with my life. How do I cope with this betrayal?

Title pretty much. What makes it worse to me is the fact that my wife had asked me personally about who I had been with and who I lost my virginity to. I really thought that she would bring up some thing of this magnitude up to me personally. They both are going to have exactly the same response " I thought you knew already". I am an emotional wreck at the moment. Much love y' all