I'm a new SM and I'm having some really difficult feelings. SD is 15 and we used to get along great as I tried to be her friend. I noticed that I was putting myself in a bad position and she was taking advantage of it. Barrowing clothes and make-up without telling me, asking for rides everywhere and sometimes saying mean things like "My dad doesn't love you enough to have kids with you" It really hurt as I don't have kids and I'm not sure if I want them. S/O has said he doesn't want anymore as he has 3 years left and he's free, also he has 4 kids with his EX. The other SD who is 16 has also said some mean things like if I were to have a kid she'd kill it. Everyone laughs at these comments when they say them except me. I don't like talking to them as I don't like who they are as people. They are mean and minipulative to both of their parents, they disrespect their grandparents, are bossy and rude to everyone. The father acknowledges this but he's in over his head as he really was never home much to raise the kids and he's just learning who they are too. The BM acts a lot like the kids, or maybe the kids act a lot like their mom. I love my S/O and he wants to marry me when the divorce goes through but I don't know how to deal with his kids. I'm so defensive of him with his kids and it's making this worse for everyone. I just feel like they should say please and thank you and be greatful for the things they get. I'm starting to feel resentful and angry and becoming a person I really hate. Also, I'm not sure if I'm starting to want kids just to be spiteful and prove to the world that I can raise decent human beings and not rude illmannered spoiled brats or if I want them because I want to share a special bond with him. I feel like maybe I'm not part of his family without that connection. He did say that if I ever asked him me or his kids that he would choose his blood over me. I was insulted as I would never ask that of him and it's becoming harder and harder to feel like part of the family with the things they say to me.