I have always had a dodgy relationship with my sister and I find her difficult at times because she has a learning disability. Anyway, she has 2 kids that she regularly leaves alone for about 2 hours, they are 7 and 9. I have spoken to her several times about it and she says she will stop doing it. Randomly, 2 weeks ago she stopped contacting me which she hasn't done before. My boyfriend saw her walking her dog a couple of days ago and apparently she told him that she thought I had called social services on her for leaving the children. I haven't. My boyfriend didn't tell me at the time and only blurted it out today when we had words. I asked why he didn't tell me at the time and he said he wouldn't have told me at all but it just came out. This isn't the first time he has done this, randomly blurting stuff out that he says my sister has said about me. I am fairly sure they talk about me behind my back as well as my sister tells me he has said unkind things. I can't blame her as she has this learning disability but my boyfriend being like this feels wrong. He says he doesn't want to get involved but seems to think its ok to talk about me badly to my sister and neglect to tell me what she has said normally but its like he blurts it out to be hurtful. What do you all think? I'm beginning to think he's a snake.