It's got too.
We have 5 dcs between us. He has 2 (2 different mothers but a massive age gap between them both) I have 2 to the same dad and we've just had a baby together.
So that's massively challenging in itself
At the moment I have a massive issue with dss.
I can't help it, he's only 5 and he's out of control. Every weekend I keep it all locked inside but I can never wait for him to go home.
This weekend he's whacked my dd around the head with the wardrobe door leaving her bruised.
He's gone into my ds's room and wrecked it
He's fired bullets from his nerf gun at the baby
He's refused to eat anything except sweets
He's blamed absolutely everything on his older sister
He's thrown his tea on the floor
We have rules in the house for things like no eating on the new sofa....applies to everyone except dss who has spend the weekend eating sweets on it.
I bet if dh comes home tonight and my kids are sat eating sweets on the sofa then something would be said about it.
I could go on and on and on.....and what does dh do? Nothing. Absolutely nothing because in his eyes, he's a perfect angel that can do no wrong. He is never told off at home either and be runs rings around his mum and his dad.
I've been in his life for 4 years now and ever since he was a baby, I knew he would have behaviour problems. Dh has said for the past 4 years 'oh well he's only 2, he's still learning'....he's still saying it now at 5 years old.
This weekend I told him off in front of dh, I'd finally lost it when he began swinging his big truck that's full of plastic cars round the living room which could of hit the baby. Obviously he wasn't listening to dh when he told him not to do it but he did when I shouted at him.
I know he's still very young. I know it's all to do with attention. He's an only child at home (and does get away with absolutely everything because he's a pfb to his mum) and he comes here and he has to be the boss of everyone.
But dh needs to parent more. He does tell him off but he gets away with everything because he only has him on a weekend and doesn't want to spend the weekend telling him off....which I understand but that's what he needs!!!! He needs boundaries. When dh tells him off, dss doesn't listen....ever. Dh needs to actually get up and get down to his level, look him in the eye and tell him no. But he doesn't.
It can be anything, dh will say 'don't do that' and dss will say 'ok but I'm going to do it anyway' and will proceed to do whatever it is. Sometimes dh even laughs and says 'you're such a handful'. But it's not funny. Not when it's something like rubbing play doh into the carpet which I then spend ages scrubbing out again.
Im at my wits end, especially after the wardrobe incident which dss said over and over was an accident but my daughter said it wasn't and I believe my daughter 100%.....but what did dh do? Nothing. Didn't even ask if my dd was ok even though she was crying her eyes out
I just really can't see our marriage lasting at the moment as I'm so wound up and he's just a clueless parent who barely puts any effort in. He can't even see the reason that is teenage daughter hardly visits us anymore is because of her younger brother. He is nasty to her from the minute she gets here to the minute she leaves.....but it doesn't matter as he's only 5 and still learning 
I don't think you can ever love anyone else's kids like your own. I know dh doesn't love my kids. I do feel a good strong bond with his daughter and I wish she visited us more. I'm taking her away for a weekend next year and am looking forward to spending some time with her.
But right now with dss....I feel nothing towards him. Actually I feel more love towards him if dh isn't here because he knows he can't get away with any of his crap with me. He also knows that no means no. We can have a nice time together.....so actually my whole issue is worn dh. But he's as stubborn as they come and won't change.
Also just to add.....my ds is autistic so I'm well and truly clued up on behaviour and how to deal with it.
That's my rant over and thank goodness it's Monday....my favourite day of the week. Do I sound like an absolute bitch?