Dear canary:

“he had told me he has ASPD symptoms since his childhood and has been professionally diagnosed.. ASPD is evident in childhood “- sounds like he did try somehow, somewhat to get better.

I don’t know if my following point is relevant, but here it is anyway: a person cannot be diagnosed with ASPD before the age of 18 (“Symptoms & Criteria for Antisocial Personality Disorder. According to the DSM-5, there are four diagnostic criterion.. B. The person is at least age 18”, Wikipedia).

“he said he… only cares for himself so he does not care about how it’s affecting others” – he said that he did not care about how his behavior was affecting you. I am sorry, canary.

“I cannot be the one responsible to help him seek professional support“- of course not.

“There is absolutely nothing I can do for him. So I’m trying to let go of hope I have for him“- the serenity prayer states in part: “Help me to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the difference”- you can’t change him (and shouldn’t try anymore), you can change your attitude, although it is difficult to accomplish (to give up hope to change him, and move on from him)- focus then on what you can change and post again anytime with your thoughts and feelings. I am here to reply to you further if/ when you post.

anita