Is AUTHOR wrong in the post ? POST : This happened awhile ago and my friends think I'm petty for disowning him, but awhile back me and 3 friends were going to a concert to see an artist that we like. We all buy tickets at the same time and the concert is in 5 months. Fast forward 4 and a half months later , one of my friends (michael) gets a girlfriend (sally). Coincidentally sally also likes this artist that we're going to see and had already bought a balcony ticket, but the four of us had bought floor tickets. Michael and sally quickly became the insufferable kind of couple that sits on the same side of the table at restaurants and wear matching sweaters, so naturally they really wanted to watch the show together. Turns out that William (another friend in our group) says that he found a new job and had to go on a business trip on the date of the concert so he couldn't make it and offers to give away his ticket to sally, and sally was gonna give the ticket away on twitter. The day of the concert I ask william if he remembered to let sally have his ticket and he said that he did. We all have a good time at the show but a few days later I was third wheeling michael and sally and he offhandedly mentions that he bought sally's ticket from William. Both Sally and Michael don't think its a big deal but it makes me upsets me because william made it seems like he gave it to them, but instead he sold it them after he had told me AND michael that he would just give it to sally. I'm not upset that he sold the ticket, I'm upset that he SAID to me and michael that he would just give it to sally, and then later on changed his mind AND lied to me about giving away the ticket after he had sold it to Michael. I brought it up to William once but he blew me off and told me I was overreacting, and I haven't talked to him since. Am I being an overreacting asshole!?  


TLDR: Friend **W** said he would give Friend **M**'s gf a free concert ticket since she had the wrong one. When i asked said friend **W** if he gave it away he said he did but I later found out that he (**W)** sold it to **M!** When I confronted **W** about it he blew me off and told me I was being ridiculous. AITA for no longer wanting to be friends with this guy.