My Brother's Best Friend

My older brother?s best friend Danny went to war in Afghanistan while my brother stayed in college. Danny is back home now while my brother is finishing his first year of law school. Since Danny?s been home, he and I have become really close friends. Danny was really deptressed when he first came home, having lost a leg in a btk amputation in the military. I think our friendship has helped him a lot. He has told me a lot about my brother and how close they were and how much he misses him. I?m starting to wonder if Danny and my brother did the kind of things he and I are doing together. I wonder how my big brother will feel about me doing these things with his friends. Life can be so confusing but I?d love to play this sex stuff with Danny and my brother.