Worst argument

      I almost never get into arguments but the worst argument that I've ever been in was when I got into a fight with one of my best friends, I won't say his name so let's call him Daniel and let's call his girlfriend Ruby, of course, these are not their real names but just so I don't have to go through the trouble of saying he, she and them. Ok, so I'm friends with both Daniel and Ruby, I have been friends with Ruby a long time before Daniel asked her out and they got together but we didn't talk all the time but we did talk pretty often. Since I always hung out with Daniel I go to spend more time with Ruby. after awhile I found myself really close to Ruby, I felt like we had bonded and grew closer as friends, Daniel comprehended it as something else.
      The Oktoberfest came around and our whole friend group got together to have fun, I came with Ruby because I was just around her house so we go to Oktoberfest and we wait for the rest of the group to come. Everyone gets there but Daniel won't talk to me and he doesn't for the whole night until I get home. He accuses me of trying to steal his girl, from then on it's a pretty personal and heated argument, at the end of our argument I do something that I will forever regret, Daniel even pleaded me not to but I was too hot headed to listen. What I did is something I don't want to reveal because of how bad I feel about it, maybe in the future, I will come back and write what I did but for now, I'll keep that to myself.