My bf and I have been together for over a year and recently moved in together. I have 3 daughters 19, 17, and 8 and he has 1 son 9. My girls are actually pretty good kids. My older girls are rarely home and my youngest has some health issues but is very well behaved. I've always pushed discipline and respect on my girls. They know better than to ever tell me NO or You're not my boss. But my bf's son... not so much. I understand all kids are different and boys are different than girls however, I do not and will not tolerate disrespect. His son is 9 and over 200 lbs. To me this is not okay.