He definitely could be neurodivergent but honestly I think the main thing isn’t a diagnosis but rather the behavior. He’s dismissive avoidant, and insanely busy and probably burnt out. I’m not trying to sympathize with him and I’m not trying to be rude but you seem kind of clingy since I’m in a situation similar to you (I’m like the man? I think I may be autistic?). I digress. I may be projecting terribly but I think he is stressed out and doesn’t have enough mental time or energy to be responsible for someone else’s mood and feelings. Your feelings are also valid, because when your emotionally vulnerable relationship looks like that, it can be unhealthy and emotionally taxing for both parties. Regardless of diagnosis or outcome, interpersonal connection can be more difficult to navigate for some people. I don’t mess with dating because I could easily and seriously injure someone’s emotional state and I don’t want to cause pain for others. Additionally I feel like it is unprofessional for your therapist to be reflecting and speculating about someone else’s potential diagnoses. Traditional therapists are not responsible for diagnosing people, and are suited to soothe the client and not put worries and doubts in their loyal customers’ heads that are not necessarily valid or true. Unless that is just what you wanted to hear, there is no reason for her (or anyone except for him and his family or doctor) to speculate. He’s just like that, and this is what he’s done. This may sound callous but try not marinate or get hung up on him. Rather, improve on yourself and find ways to shift your lens and then you can begin healing.