Adhd bf inquiry.

Hello,

I just recently started a relation with my bf who was diagnosed with adhd since childhood.

I have seen some adhd aspects like i cant ask many questions or he feels saturated, we talk something he does not like and come back like nothing has happened, which for me is hard because i am still upset or angry and he is like if nothing has happened.

We are both in out mid 30's.

Could you kindly please explain me what attitudes or behaviours are of adhd and when he has them how to support him? I am sometimes very lost, he sometimes tells me this is adhd but seldom. And I wish to understand so i know what trigger him and avoid it or support him.

I have read a lot of adhd, and watched videos but it will nice to read it from someone who has adhd.

He is not very open of the topic...sometimes he does speak but very little

Thank you!