Socializing didn't require a person to look or act like everyone else.
Supper was picked-at leftovers, and neither felt like socializing with Bird Song's guests, who came and went on their own, without their usual afternoon goodies and conversation.
So Mrs. Martin is up there socializing with Mr. Martin in her heaven, unaware that Mr. Martin is balling his brains out with Annie across the hall—cloud—while Annie, in her heaven, is the happy homemaker up on Oak Street.
Obviously he was accustomed to socializing on a high level.
If you guys are through socializing, we'd better get moving.