Please bear with me, this is long but I'll keep it as short as I can, but I really need help. I don't know if I'm just being an ashole here.
When I first met my boyfriend 2 years ago, he told me he doesn't remember anything before the age of 8yo. He said he think it's because he had a traumatic childhood of sexual abuse, all because he also has anxiety and panic attacks, no other reasons at all (so why specifically sexual?)
Then in a social media group we made intros of ourselves and in his, he said he can't remember anything from before 13yo because he was told that traumatic things happened to him. I never commented on this but I was confused.
Just a few months ago we were having an unrelated conversation and I mentioned how some people don't remember anything before they were 8yo. He quickly said "Well I don't remember anything before I was 17yo".
Then more recently he told me that nothing sexual happened but he had physical abuse from the age of 9-17yo (so what about not remembering the rest of his childhood?), but he continued to tell other people that it was sexual. Today, I sent screenshots of our intros "to joke about them" but really to casually mention "you said 13yo here but you told me 17yo?" And then he just said, "I never said 17yo".
He has lied about mental disorders in the past - before I met him he used to claim to have bipolar, and then changed it to DID (multiple personalities), for one, he has absolutely no symptoms of these and has never seen a doctor, but also, one day I told him that my therapist suspects that I may have DID, and then my boyfriend's first response was to quickly backtrack all the claims he had about his DID, literally saying "I don't have that", as if he was worried about something (maybe that now I have a proffesional to tell me what the real symptoms are?)
He does for sure also lie about random things to make himself seem more interesting, to fit in, or seem special/different and for sympathy.
For context, I have PTSD from childhood sexual and physical abuse, as do my sisters and my closest friend. So I do have a slight grasp on the typical symptoms (I know it's different for everyone), and he doesn't show anything (except his panic attacks which he usually only has when he's overthinking and tired). He did used to be dramatically jumpy, but it seemed very fake and after a while he stopped doing it around me, as if he couldn't keep up the act or forgot. But also, he throws around "I was sexually abused" so often, it's triggering for me and the people in our group who have actually been through it.
Again, I know I sound like an ashole, am I just being a paranoid one right now? I just don't understand all these inconsistencies etc. Any advice, please?