I have too many issues with him to go over but in short he has been shit, pays nothing, has a bonkers lifestyle. I have gone through great pains to maintain a relationship for him and his children even though at times he has genuinely done things that would make others say fuck him. Why? Because despite it all, they love him. Last weekend he came to pick up the children (half a day late). They stayed with him overnight. In which time, they did NOTHING just stayed home playing on (separate rooms) computer games. He dropped them off and said they had been up since 3.30 am in the morning. There is a sort of reason for this. His wifes children go to bed at 4 - 5 pm due to some sleep issue and one of them is autistic. Apparently my 13 year old had decided to get up after they had gone to bed on the Sat night at 10 pm, he had then fallen asleep downstairs. At 3.30 when they got up this thus woke him up. He went upstairs and then woke his sister up, at which point they both decided to just get up (naughty of them but sort of understandable considering the rest of them were up). So I questioned why he hadnt just told my children who normally go to bed at normal times, to just go to bed, and he said 'are you trying to tell me that if they told you they couldnt sleep that you would FORCE them to bed?' Im like, erm, hell yeah because 3.30 is nightime! Of course it makes no odds to him because hes up anyway with his odd little family, but then my children come home HANGING and hardly able to function the next school day. Just what else do I do. I dont want to say you cant see them anymore but Ive told him before this is unacceptable and he implies that Im wrong and controlling, but in actual fact i think he is just being a lazy parent. Admittedly, and possibly unreasonably it does get on my tits that they have this odd sleep thing going on but my children are only there every 4 weeks so i think he should make sure they get normal sleep?!