I am not sure if my 43 yr old bf has a mental illness or not, maybe its just his personality..Anyway here are some of my concerns, He speaks very agressively, cursing at everything and everyone, ALL THE TIME he shouts too.. never speaks in a quiet tone. He talks to himself in the shower and answers himself and yet denies ever doing this, I catch him threatening my dog, which annoys him , and he denies saying anything even when i stood and watched him stand and point at the dog and tell it 'i'm gonna get you" , then denied it and lied and said i was imagining things.... he twists things around to make them my fault all the time, he is extremely good looking, and vain, and constantly announces this.. . He is always 'right' and wants me to do everything his way and continuously explais things to me in massive detail and then repeats himself at least twice.. as if I am 5 yrs old... can anyone tell me if these are signs of something serious? he has an autistic son and I am not sure whether he is somewhat autistic himself??? That or may be he is a psychopath? or just an ***.. He has now moved in with me and my kids and I am a bit worried sometimes......