Aita For Exposing My Husband During His

AITA for exposing my husband during his own birthday dinner in front of his entire family. I need honest opinions because everyone in my life is calling me the villain right now. I am thirty one years old and I have been married to Mark for four years. Last month I started noticing small things. His phone stayed face down constantly. He showered right after work even though he never used to. He started calling his coworker Jenna his work wife as a joke that stopped feeling like a joke. I asked him directly if something was going on. He laughed and said I was being paranoid and insecure. So I let it go for a while. Then two weeks ago I found a hotel receipt in his jacket pocket from a night he told me he was staying late at the office. I did not confront him right away. Instead I decided to wait and gather more information because I know how slippery he can be with words. I checked our shared calendar and found a pattern. Every single time he claimed to work late Jenna also had a mysteriously empty calendar. I contacted Jenna directly through a fake social media account pretending to be someone hiring for her industry. Within one conversation she mentioned casually that her boyfriend worked in finance just like Mark does. My stomach dropped because Mark introduced Jenna to me once as single. I dug deeper and found out Jenna has an actual long term boyfriend named Derek who has no idea she has been meeting up with a married man from her office. So this was not just an affair. It was two people cheating on two different partners. I could have quietly divorced Mark and moved on. But something in me wanted justice for Derek too, and I wanted Mark to feel humiliated the way I felt every single day discovering another lie. Mark planned a huge birthday dinner with his parents, his sister, and close friends at an expensive restaurant downtown. I decided that night was the night everything would come out. I invited Jenna and told her it was a surprise for Mark since she was his close friend. What she did not know was that I also secretly invited Derek, claiming I was helping him plan a surprise proposal for Jenna. Both of them showed up smiling, completely unaware of what was waiting for them. Halfway through dinner, right after the waiters brought out the birthday cake, I stood up holding my phone. I calmly played a voicemail Mark left me weeks ago where he complained about pretending to love me while he was falling for Jenna. The entire table went silent. Mark tried grabbing my phone but I held it up high enough that everyone could hear every humiliating word. Jenna turned pale when Derek stood up and asked her why Mark was mentioning falling in love with her. The two of them started arguing right there in the middle of the restaurant while Mark tried to explain himself to his stunned parents. His mother started crying. His sister called me insane for turning his birthday into a public execution. Chairs got pushed back. Someone dropped a glass. The whole restaurant was staring at our table like it was reality television. Mark screamed at me asking how I could do something so cruel on his birthday. I looked him dead in the eyes and said cruelty was hiding an affair for months while making me feel crazy for noticing. Derek stormed out with Jenna chasing after him, still trying to explain herself. Mark sat there completely destroyed in front of everyone who loved him. Some of his relatives sided with him instantly, saying I should have handled it privately instead of humiliating him in public. Others quietly told me later that they always suspected something was wrong with Mark. Now our families are split into two furious camps and group chats are exploding with accusations. My mother in law has not spoken to me since that night. Mark moved out three days later and has been begging for one more chance, claiming the public humiliation was worse than what he actually did wrong. I keep replaying that moment wondering if I destroyed his life to protect my own dignity or if I simply gave him the ending he earned. So Reddit, was I wrong for turning his birthday dinner into a public reckoning instead of ending things quietly behind closed doors.