CANDC, you're right. However, the relationship I have with this person is not so simple. Before writing this post I was going to refer to her as an 'acquaintance', but the term wasn't suitable. Why would I talk about something like that with an acquaintance & not with a friend? Let me explain: she has been my housemate for almost a year & because of this she knows me very well. Although she wasn't directly affected by my exaggerated behaviours, pathological lie etc.. she had the chance of observing everything from an objective point of view. As the months passed & I kept creating troubles she started having doubts about our friendship. Eventually, two months ago we had a fight & she told me she didn't want me to be her friend anymore. Obviously she doesn't know about my PD & I don't think I'll tell her since I'm going to move soon.
Now we treat each other as acquaintances, sometimes as strangers. I am sure that she has a grudge against me as I hurt some of her friends. So even though I hated her for saying those things, I don't have the right to answer back.

Thank you very much for your advices. I won't forget them ☻