UPDATE: I (28/M) literally just caught my brother (22/M) fucking my fiance (27/F)

I'm not sure where else to go. This was my brother, someone I loved and grew up with.<br><br>My fiance has been pacing back and forth in the room and when I confronted her she just kept saying she was sorry, that she loved me, and she was in tears. I left her in the room and spent the night in one of the other bedrooms. I'm now sitting in the bed writing this, still in shock. <br><br>I put my entire life savings into this wedding, and I was really expecting to spend my life with her. <br><br>My brother won't leave. I asked him if he'd leave and he said he's been living in the house too and has nowhere else to go. He keeps saying she came on to him. He's been trying to talk to me about it but I just don't want to speak to him. What's there to say, he says he's sorry, she says she's sorry, but this is beyond a mistake, and I can never forgive him. I just can't.<br><br>As a consequence of this, I'm breaking down, and becoming depressed. I've always thought of myself as someone who can bounce back, and I'm obviously not. <br><br>Something else came to light today after I saw this post. It seems that my fiance and brother were going behind my back for months. All of my friends and family are in shock. No one ever expected it and it caught everyone off guard. I'm not sure if it helps to see my brother for what he is, but it doesn't make me feel better.<br><br>Even though I didn't go through with the wedding, I went through the motions for the guests. I did it for my parents. I didn't want the embarrassment of a cancelled wedding. I put on the tuxedo and shook hands and said hello. My fiance was crying in the car as we drove around aimlessly for a few hours. It was a sad sight to see and it killed a piece of me.<br><br>I still can't seem to forgive them. I can't forgive my brother for ruinning the trust we had as brothers and I don't think I can forgive my ex for cheating. <br><br>After the guests left, we decided to stay in a hotel instead of going back home. I broke down in tears in front of my parents and some of my friends and family. It was embarrassing. I couldn't hold it in anymore. I can no longer imagine myself spending the rest of my life with her. This whole thing has been a shit show. <br><br>I've been on autopilot for days. It's surreal to see people you thought you knew turn out to be completely different people in the end. <br><br>Sorry for the wall of text. I'm just not in good shape right now.