Hi
feel a bit foolish as I posted a new thread, then came across this and I should have read it first, as I am in a very similar situation (see 'Never thought I'd be in this situation' (though sorry it's a bit long and difficult to read)
In case you can't be bothered - briefly, I got remarried last year and my husband's 12 year old son came to live with us, which I didn't expect. I have a 12 year old daughter, and they don't get on. My step son's behaviour isn't as difficult as yours, but he is very hard to cope with, and I worry that he may have a mild form of autism.
If I try to raise this though, my husband says I'm just comparing the two children, and it can spark off a row if I don't back down.
I feel so sorry for you scrumpy, as I know how hard this is, and how alone it makes you feel. Some days, I really have to try so hard not to let his behaviour make me resent him being here. He's only a boy, he needs security and love, but being a step parent is so hard when you're faced with these problems.
He frequently 'forgets' to go to the loo, I have to pick soiled pants and jeans out of the laundry basket. He picks his nose and eats it, he has to be told all the time to use a knife and fork, he won't eat 80% of foods, and then only if they're arranged on the plate in a certain way (not touching), he karate kicks around the house, never comes when you call him for a meal - I know it all sounds petty, but it's this day to day stuff that makes you want to cry.
When his dad asks how our day has been, I have to say ok, as if I tell him things he gets angry that he says I'm always picking on my step son, and is my daughter so perfect? Of course she isn't, she gets pulled up when necessary, but on the basic things like hygiene and manners I don't have to.
Sorry to rant. Much sympathy with scrumpy. Sending you a hug - I know I need one. xx