Been with lovely DP for 18 months- both very surprised to find happiness after bad marriages. We get on really well- my 2 DS age 15 and 20 think he's great and I've spent a lot of time with his 2 DS age 16 and 12. Generally get on very well with them. His younger DS has Adhd and mild ASD, older lad has mild ASD too. The younger one can be very challenging, with difficult behaviour. Their Mum struggles to cope with him and so he lives with DP alternate weeks. Over Christmas he has been utterly, utterly obnoxious to his Dad. Demanding, rude, swearing at him....DP is an incredible father who gives so much time and love to his boys. I have found it incredibly upsetting to hear him spoken to the way his 12 year old has done. This is nothing to do with Adhd or ASD - swearing and calling his Dad a xxxxjng dickhead at midnight because he doesn't get his own way about buying a new computer game (yes at midnight) has nothing to do with SEN. I've come away this afternoon feeling quite tearful- I hate hearing DP spoken to like this. He is a big, successful man who takes no shit from anyone in his professional life or elsewhere, but he doesn't seem to deal with DS appalling rudeness and lack of respect. At other times, DS is lovely and clearly adores his Dad. I feel I can't get involved and give his lad a piece of my mind, but it's really hard being a bystander. How has anyone else handled these things?