My AH brother wants to rekindle our relationship

TW: sexual abuse

For starters, our family is complicated. I 24F went to therapy and have been recovering from cptsd and years of different forms of trauma. My brother 26M, has been texting me more frequently since he got a dog and I have a cat and that's our only common ground rn bec I cut contact with my parents and him over a year ago due to a large list of reasons.

My dad is an emotionally neglectful, huge racist/sexist/bigot with a narcissistic personality. My mom has irregularity emotional issues with her own set of trauma that she in in denial about. It is important to mention that he was supposed to be on an IEP or 504 school plan as a kid as well as my therapist and multiple people reassuring my long-term hypothesis of him being undiagnosed with autism. He sexually assaulted me multiple times in childhood and treated me and everyone around him like dirt. Temper tantrums lasted forever, his last that I remember, he was 23 screaming at us in a parking lot over basically nothing. He is selfish, rude, crass, and also a narcissist. His behaviorisms and mannerisms have me playing mental ping pong on wether he's a sociopath or psychopath. He begged for forgiveness when I finally confessed years after the sexual abuse on how it affected me even though he "doesn't remember it".

He's texting me more now on how he's grown and changed, yet, my family and I, not dad so much, have wanted him to be in therapy for basically his whole life. And he won't go saying how he's fine without it and how it would only help his fear of spiders or the ocean or whatever. He keeps trying to convince me it's different, but when I tell him I need space, he instantly texts "so I assume I'll never see you again :(". And then proceeds to send me 10 more sad faces on how he doesn't understand why people don't like him or blah blah. Keep in mind, he does this. Every now and then, he would complain and cry about how lost he is and needs help or advice, I tell him to get help, he says he doesn't need that or it won't help. I'm just exhausted and already tried distancing myself from these crazy people. I know this sub is for venting but if you have advice or questions, I'm open to it.

I don't have the texts bec I keep deleting the chat as I don't want that reminder when I open the messaging app, but he keeps wanting answers I don't have.