My flatmate had a massive argument with her boyfriend and my name kept coming up all the time. Today I raised the issue with her telling her that I had been left very unconfortable in the house since this argument as walls are paper thin and altough I could not hear exactly what they were saying she kept shouting my name while arguing. My room is next to hers. She then came downstairs later on smiling and not saying anything. Today I called a meeting and told her I wished for us to agree a date for them to leave the house as I did not feel confortable anymore around her and her boyfriend (she brought him into the house 4 months ago without asking which has raised past arguments already, he lives here and has never paid any bill, our tenancy agreement says that we are not allowed to have anybody living here without the landlord knowledge and he said in December he would be moving with her in February). She told me that the argument arose because I had shared personal information with her boyfriend which she thought was very disrespectful! The information she speaks about is an email our landlord sent to her and me saying we had not paid the rent. As he was next to me when I read the email I told him that the landlord had sent us an email about the unpaid rent and if he could let her know as I know she rarely checks her emails and did not want her to have any problem. Was I really disrespectful to do that? Me and him really became good friends so we talk about everthing so i did not even think that I was not entiteld to share this information. Am I AIBU?? He told me before she arrived that the argument was about her finding he preferes doing things with others other than her (me in this case) as she went away for new years eve and as he could not travel (health issues) he spent new years eve with me, a friend of mine and one of his, and kept telling her how such an amazing time he had with us. So their version of the argument is diferent, the day of the fight I remember him coming down and telling me she was in a bad mood because she was a bit jealous and for me to ignore.