Every since I started dating my boyfriend I’ve had a problem with his sister at first I noticed she would flirt hardcore with him and tell me things like “he won’t sleep in the same bed as me but I miss when he use to” now she acts like she’s way better than me she won’t even speak to me and when I include he things she just acts like a petty bitch well today she got on my boyfriends phones and read MY messages then proceed to get mad about me saying she needs help getting over her ex bc she’s dragging it out. Here’s some background knowledge ab that her bf recently broke up w her bc he said she was pulling him away from god and now she’s crying all day every day and making everyone feel bad for her saying that he was texting other girls when he was not idk what to do bc my bf keeps getting mad that I have a problem w her