Elspeth was already into Dominic when they met once at Pride, but it's the way she asks him to "talk philosophy to me" that seems to really get her going. Which Dominic loves. They're great friends with absolutely no structure to their friendship; they'll cross paths on the street and immediately cancel all their plans to talk about life and the universe for hours. And then have sex. They're just simpatico on a lot of levels, but they meet each other as free spirits: no obligations, no expectations. Just hot making out, sexual experimentation, and moral philosophy talk.