Looking for advice regarding a teenage stepson?

[Steph]

I think you should leave it to his dad to give him advice and most teenagers are self centered and it's all about them. He will experiment with drugs drink ect. Perhaps you see him as a threat and is disrupting your life ? Maybe encourage time on his own with his dad , it must be hard his dad having another child with you and he will feel pushed out which is natural. I expect he will grow up and feel more stable in time.