It is your DPs behaviour that has created a teen who thinks his behaviour has no impact on other people.
I know this is true. Although, to be completely fair, DH has been making efforts to change, it is almost like he lacks any instinctive sense of how to parent with authority. I do have to acknowledge the progress he has made over the last couple of years, but it isn't easy for him to apply what he learned in one situaation to another, IYSWIM - he is forever apologising and saying "I got it wrong", but it doesn't seem to help with the next time.
I know there are Disney Dads who became that way post-breakup. DH was a Disney Dad for the kids' entire lives, and their mum was a Disney Mum. It was their "normal", and all the standards are completely askew.
You can still set boundaries on your own relationship with your DSS, even without your DPs support.
Yes. This is what I am trying to decide at the moment - how much I am still going to continue to do. I have told DH that for the time being at least (certainly until I get an apology and some kind of understanding is agreed with DSS about his behaviour), I am not going to go out of my way for DSS. The exact shape of that is what I am trying to decide for myself. Obviously, I am not going to be suggesting or assisting him with special events, parties, his social life, or buying him clothing items.
We have a jobs rota that divides up dinners and washing up; I do it a bit more often than the kids, but that will go unchanged and I will carry on cooking for everyone on 'my' nights, as I will expect him to do on his. On the other hand, I am not keen to carry on doing DSS's laundry. I don't particularly want DH to pick that job up if I drop it, though - the bottom line is that DH and I already have so little time together, and DH hasn't enough time to stay on top of things around the house already - so everything that cuts into his time, ends up making my life a tiny bit harder and less pleasant.
DSS refuses to walk the dog anymore, so DH does that every weekday morning and most weekday nights (DSD does a couple too); that is right there a couple of hours every day that DH is not around, not available to help with DD, not available to spend time with me, not available to help with housework, not available to do the other things that he needs to do, which then get done later in the evening. which means we end up not seeing each other most of the evening. I don't drive, so the ferrying falls to DH - but the knock-on effect is that when DH is out driving him to football practice or whatever, I am stuck at home with our DD and no option of going out anywhere myself on those evenings, and no company, and no help with the bedtime routine. I also end up picking up more of the slack at home (if someone needs to mop a floor and DH is or has been ferrying kids, for example, I'll be the one to mop - its just a matter of availability and time, IYSWIM...).
I'm also reluctant to say that DSS has to do his own laundry, because I know that this will be a disaster with repercussions for me. He will very likely break the machine (that may sound silly, but if you knew DSS you would know that he is a breaker - not intentionally, but through a terrible mix of carelessness and bad luck). If that by some miracle didn't happen, he'd certainly spill detergent everywhere, leave clothes in the washer for days on end, destroy school shirts and sports gear which then would have to be replaced (and he'll be paying for the light fixture for months, so no chance of him paying for the clothes he ruins...)
Well. Definitely something is going to change. I just am going to look for what will make my life easier and allow me to focus more on my work, my DD, my marriage, and my friends - instead of continuing to put those things second to this pointless grind of trying to be a "good stepmum".