Hi,so does anyone else have a younger sibling living with them and their S/O? My youngest sister who just turned 21 moved in with us about 6 months ago. She has a really bad attitude and a whole bunch of disrespect for me,and my boyfriend absolutely hates it. It's most like "sibiling fighting" between us but my boyfriend doesn't get it. He has so much hate for her. It literally ruins his whole mood and day. He gets in the worse mood and takes it out on me,to the point where I can't stand it that I want to sleep on the couch. I'm such a positive person and he's total opposite when she's around. And it's ruins my boyfriend and l's relationship. We're both 24,and have been together for about 3 years now,know eachother for 5. Idk what to do,someone please help:(