Hello I am a stepdad to a 16 almost 17 year old. In our family we have my dd18, ds17 ds16 and my ds 2 who is half sibling of my stepson. I married my wife about 4 and half years ago.
We have our issues as a blended family (which one doesn't). However I have noticed something from my dss that I found quite rude. My parents are very involved in my children's lives and have extended this to stepson. They like to take the dc out on days out and on trips. My parents say that he refuses to talk to them and gets angry at them and other teens (that does happen with him at home aswell but from what it sounds from my parents it is worse). This came to a head last weekend when my dad caught him trying to take my mums car keys from her handbag. He wouldn't say why he trying to steal the keys but I assume it was to steal the car. We are a close family and we go on many outings where will take each other's kids out. But it has got to a point where my sister and her husband no longer want to take him on the trips. They took him to Alton towers for the weeekend and he behaved awfully and my nephew was punched by him as they shared a hotel room.
Like I said he can be bad with me but it's not as bad as with my family from whom he behaves terribly. So now we are in the situation where family don't want to take him on trips and don't want there dc going on our trips.
I do feel sorry for the boy he has had a tough upbringing. His parents separated when he was four his Mum is English and his dad is Albanian. He was raised by Dad in Albania, however his father passed away and he has lived with us full time since about 8 months since our marriage. So I completely get how some of this is both cultural and emotional behaviour.
I think one problem might be that my parents are very interested in people's lives and often ask him lots of questions about Albania. This might bring back traumatic memories.
Another issue is the people he associates with tend to be much older and I feel they are dodgy and not a good influence.
Overall though having said all this he can also be a lovely young man.