Really need some collective wisdom.
My BF of 2 years is undiagnosed autistic. He shows many traits, even his colleagues point it out to him sometimes. He also acknowledges this. He has no friends, is a bit of a loner, and doesn't have any hobbies outside work (programming).
For context, he is 35 and childless, has a high paying job as a programmer and seems to spend 12 hour days 6 days a week working. He only had 5 days off last year. He has repeatedly said work is a large part of his identity. His hygiene can often be poor, in that he smells musty as if his clothes have not been dried properly, and he has become overweight over lockdown. Prior to our relationship, he has had a string of 2 year relationships that seem to all not progress beyond the 2 year dating mark (never lived with a woman, or taken a holiday with a woman either).
At the beginning of our relationship he was attentive and I would hear from him each day. Recently, he sees it appropriate to not read/respond to my messages for days on end. He also never makes plans to see me unless I ask. Just before Xmas I became frustrated and left him and told him why. Immediately, he began to be attentive again, so we reunited. It's now Feb, and he is back to his old ways.
I don't want to excuse his behaviour, but I wonder how much of this is his autism? I want to support him, but I am getting very fed up.