My boyfriend (26M) and I were invited to attend a music festival and stay at an AirBnB, all covered by the person inviting us. We will call her Girly Pop (27F). Girly Pop and my boyfriend had worked together and have been friends for a few years so when he told me she was giving us tickets, I was super excited. She and I have since become good friends and text often.
A few weeks after we became friends, I invited my sister to come hang out with us for the night in the city. Going out to a bar or two, having a good time. My sister and I have always been mirror images of each other, often enjoying many of the same things and activities for the majority of our lives, so we always have a good time. Girly Pop then invited my sister to also come to the festival and stay in the AirBnB with us as she had one extra pass and there was room in the BnB. Girly Pop offers out of the kindness of her heart and money is not mentioned by anyone. When me and my boyfriend had been invited, and for the time since then, we have been asking to pay our part and offering to pay continuously. My sister wanted to go to the festival but also seemed nervous. She is often nervous about things.
Fast forward a few weeks and my sister has been asking me for a plan or an itinerary and I just hadn't come up with one yet due to life, work, etc. Girly Pop also messages me her idea for the weekend on the same morning. Girly Pop texts me at this time also and asks me if I remember anything being mentioned about my sister's boyfriend (22/23M) coming to the festival or staying at the BnB. I respond to Girly Pop and I said No? I don't remember him being in the plan whatsoever.
I respond to my sister and let her know that I at least plan to be at the BnB for the entire weekend, and that we planned to move as a unit from the BnB to the festival and vice versa as there would be 5 of us at this time. I asked her at this time why she was asking Girly Pop about her fiancee coming or not. My sister gets defensive. Tells me I don't need to be rude and that I could be nicer. I tell my sister that we would really like it if she would plan to either be with us or not with us for the weekend, that there are other people who would want the three day pass, etc.
Some of her texts to me include:
"There was no stipulation when I texted her about this two weeks ago. Again, if it;s an issue then I will literally just stay sober and go home"
"If he is connected to the BnB then what is the issue?" The BnB is in my friend's name who has never met the fiance before.
"I'll go to the festival but yall are not making this fun"
"There is a possibility that he will stop by throughout the weekend so that I can go home or be dropped off
"Well I'm not sure what my plan is right now, bc idk if I'm interested in hanging out the whole weekend"
"So yall want me to stay the entire weekend and I can't go anywhere?"
"I don't have to do exactly what yall want me to do and i had no idea it was going to be like that"
These texts are included in the screenshots I sent Girly Pop. Based on these messages, Girly Pop decided she actually didn't care for my sister to come and revoked her ticket, texting her and letting her know.
My sister then lost her absolute mind on me. Texted me and then yelled at me for 15 minutes on the phone. Saying I betrayed her and broke her trust and that I am a bad sister and I should never have shared her private messages with Girly Pop. I acknowledge this part and I do feel guilty for breaking her trust. But on the other side, she was moving weird and I felt that Girly Pop being the host had the right to know these details.
All of my sister's angry messages to me have been about how I got the ticket taken from her and she even went out of her way to message Girly Pop as well and be rude to her, specifically talking about the ticket again. Girly Pop reminds me at this point that my sister had texted her about two weeks ago asking about a ticket for her fiancee. Girly Pop texted me when it had happened and asked, does she expect me to pay for or find her BF a ticket? I had told her no.
Girly Pop said she had sent my sister multiple links to resale and discount tickets as well. So at this point there is no reason her BF should not have a ticket if they planned on hims staying with us for the weekend, as that is what Girly Pop had said from the beginning.
Am I the asshole for sending screenshots of my sister and I's texts?