Interesting. My partner is lonely, feels worthless, can't understand why I love him, and has plenty of loving friends, but he can't relate to most people. He intentionally fills his time with work and independent hobbies, but doesn't want to bother with people (aside from me) at all. It's quite difficult for me to understand because I am the polar opposite and need a lot of interactions with others.

I'm looking at the resources provided to see if he could benefit from these. Thanks!