I have two step sons, who me and DP see a lot of, oldest is 12 (black belt in karate, very confident, street wise, etc) and younger dss is 11 end of feb (he is and has always been much more withdrawn, lacks confidence, tantrums etc).
I have always shown concern that they are very competetive with each other, for example they would be encouraged to compete even as toddlers, and would race their food (really fast so almost sick), and even at 3 and 4 years old when I met DP they would give each other black eyes in fights.
Trouble is they are now older and stronger, and it seems to be getting worse not better. Mum is often calling DP up and having all 3 of them (mum and two sons) on the phone shouting and crying. We think eldests is testosterone related, but the worry is he is a black belt who cannot walk away / control his temper when youngest winds him up.
The other day youngest spat in oldest's tea, so eldest ran at him with his knife! DP then gets hysterical phone call whilst at work 30 miles away.
It is frustrating as we cannot siggest things to their mum or she shouts/get defensive/becomes awkward about access. Havig them a couple of overnights a week we cannot do a lot.
It is very frustrating and worrying so I thought I would see what MN had to suggest.
I am also worried about youngest dss. He has always been very withdrawn, sulky, tantrummy, resists physical affection (even cuddles, from anyone), is behind in reading and wiritng (possible dyslexia), very sad, and is also quite hostile to our youngest DS, but will not admit it (though me and DP have both heard him doing so). I think he may be jealous of eldest and youngest, as they are both very big, loud, charming types, whereas he is more reserved and shy.