this is a community like r/AmITheAsshole except unlike that subreddit here you can post interpersonal conflicts, anything that's AITA but is not allowed there even posting about Scar from the lion king and trying to convince redditors that he was not the AH. rules: don't berate others and no pornography we have children here
TL;DR: Bitter truth was revealed bit by bit. Ex-fiancee had sexual interaction with a stripper. It's therapy time.
I read most of the comments in the original post and thank you for the advice. My problem was that not her being blindsided by her friends but lying. Every bridesmaid told different things and none of them gave details about what happened. I believe you can understand it just shatters the trust and makes you think there is something going on.
I thought there was something wrong with me after reading the comments. There were a lot of YTAs and I thought I should apologize. One of the bridesmaid reached out to me last evening. I suspect she saw the post somewhere and recognized it. I knew my fiancee was having problems with her friends since last week but I did not know the extent. Apparently, my ex-fiancee and her close friends blamed the girl that I encountered at mall about everything. This divided the group and led into a verbal fight. I will skip the personal details here but in the end she told me my ex-fiancee and other bridesmaids got sexual with the strippers. My fiancee was the only one who had boyfriend/fiancee/spouse(at least monogamously) there to my knowledge. Also, I was told by her that my ex-fiancee was not blindsided with stripper invites. She was happy to see the strippers and was relieved she had an excuse. I do not have proof for all of these but I got a short video of girls making out with strippers. One of the girls is my ex-fiancee and that's enough.
She has been trying to reach out to me since we broke up. I confronted her again. At first, she denied it again then it became we just touched, then okay we kissed too, okay I gave him a handjob, finally I was coerced into doing these by others as I pressed on. I just blocked her after the last part. I did not see any need to learn further. I was hurt already but learning that I got cheated on hurt more. I am not sure if it's the full truth even now. I will never know but all I can say is it hurts. I will go to a therapist to not carry my luggage to my next relationship. I lost 15K from the wedding related things and need to focus on filling the hole for a while.
Some misogynists made weird comments about women and I'll just ignore them. Some of the people told me I am an insecure, unfunny nerd for playing WoW on my bachelor party. Isn't the whole point of bachelor parties having "one last fun". It was raiding non-stop with the boys for me, not having one last sexual interaction with a stranger or having a stranger's butt on my face or penis. I will not miss on out these during marriage anyways(omitting the stranger part).
That's it. It's therapy time tomorrow and thank you for the help.