Is AUTHOR wrong in the post ? POST : Some context. I'm 23 years old and a college student. Most of the time, I live on campus but as next week is Spring Break, I came home to my parents' tonight. My brother (21) is home and his girlfriend is staying the night, as tomorrow they plan to leave early and go to Boston. I assumed that the girlfriend would get my room, my brother would sleep in his and that I would sleep on the couch. 

Turns out, I was wrong. My brother somehow convinced my mom that they should share a room. (My parents are very conservative Christians so I didn't think they'd go for it). Now, my brother's bed isn't big enough for them to sleep in together but my bed is. So, my mom told them it'd be okay to sleep in my bed. Without asking me first. I only found out when my dad came to collect me from school, as he thought I knew. He understood why I wasn't comfortable with it. I talked to my mom and was told that she would wash the sheets in the morning. Fine. Whatever. I accept I'm not going to have a say in this and don't want to fight.

My brother and his girlfriend come home. I pull my brother aside and tell him that I don't want them doing anything in my bed tonight. My brother got really mad and ignored me for the rest of the night. He made a snarky comment when he went upstairs and my mom asked me what was wrong with us. I told her and she got mad that I said that. I told her I'm not going to apologize for saying it. I also said it was messed up for her okaying this when it was my bed, without asking me first. She said there was no other option and I said that's not true, there definitely was and brought up me sleeping on the couch.

After they went to bed, my brother came back down to grab his charger and was still in a mood, mumbling about how everything is a problem. My mom said it wasn't and that I shouldn't have said it. I said I don't regret saying it. Brother said I was mad at him, I said that wasn't true, I simply asked him to not do something. He said "Whatever, she'll never stay the night again." Which isn't at all what I said or even wanted. I love his girlfriend, she's really sweet and I would have no issue with \*her\* being in my bed. I just don't want them doing anything in it.

Now my mom is upset with me because he's upset and I don't feel bad. I didn't say I was mad about her being in the room, I know she's slept in there before when I'm not home and my brother has been in his. (Though I'm not naive and think he probably snuck up there, which is why I said something.)

It's not their bed. It's mine and I didn't say it loud enough for his girlfriend to hear or do anything to make her feel uncomfortable. I said it to him and him alone, because I know him. He's the type that totally would and I think that's why he got mad.

Am I the asshole here? Should I just be okay with them doing whatever they want in my bed?