I'm aware I sound like a spoilt five year old....I'm also aware that I chose to get back with him. Honestly I think I was naive. ..I didn't consider the impact that this would actually have, I was just happy to be with him. Don't get me wrong I put in tons of effort with his kids, he couldn't fault me on that. I just wouldn't choose to if it weren't for him. Their behaviour is bad for everyone, just me. I assume they probably resent me too...and I don't want them to experience the broken family that I did as a child, it is me that encourages him to go to parents evenings etc. I did previously deal with this very well, it's like I've hit a brick wall and can't seem to block out the things I previously ignored . They are also mean to my daughter , they begrudge me doing anything nice for her even tho they have their own mum that does nice things with them. I feel like I can't treat my daughter or take her side in an argument between them because I'm so conscious of being unfair to them that I end up actually being unfair to my own child. I'm clearly going wrong here and I feel totally out of my depth, I will look into counselling. Thank you all for your comments x