I hear you. What you describe as your perception of reality is very much like my own. I have been this way since the day I became self aware at the young age of just 3 years.
My way of describing it is that since I'm not in other people's minds, looking out through their eyes I can not accept them as real beings. Not the kind of real that I am, provided that I'm even real at all. I'm not them. I'm me so how can I know for sure that they are anything more than just puppets put here by whoever put me here to give me some kind of entertainment or a sense of interaction or to fool me into believing that anything is real at all?
This strong sense of self awareness is so intense for people like us that it makes it extremely difficult to truly accept reality for what it is. We don't view or perceive as others do because we are "solipsistic" meaning that we suffer from solipsism.
I have this as well as paranoid schizophrenia. I am super paranoid, trust no one 100%, used to not trust anyone at all, even family members, worry that people are out to prey on me in some way and have learned to read people and their emotions so well that it sometimes is if I can see into the depths of their very souls. On the plus side this has lead me to become very empathic which didn't kick in until I was 17 but, I can now walk into a room full of people and feel the mood in the air as though their emotions are flowing off of them and floating through the room. I even questioned this a lot at first because I don't want to make the mistake of thinking that something is real if it is not. I have experienced it enough and seen evidence of it enough to know that it is not merely a delusion. Delusions feel different anyway. Sort of dream-like and like the effects of a drug, flooding your system. It can feel very much like getting high especially if it is an intense delusion.
Is this what it feels like to be you?