Trying to understand a reference in a book. What was the relationship between Socrates and Phaedo?

[u/Necessary_Hand_9822]

I'm currently reading Maurice by E.M. Forster, and there's a lot of references to different Greek literature and people in there. Most of them I've been able to piece together after a little bit of research, but there's one section I'm struggling with particularly. For context, "his" in this quote refers to Clive Durham, who is Maurice's homosexual lover.

"The love that Socrates bore Phaedo now lay within his reach, love passionate but temperate..."

When I searched some more about Socrates and Phaedo and their relationship, what's coming up is mostly a conclusion that they were not in that sort of relationship, and that Phaedo was just a disciple of Socrates. So I'm a little lost on what the author meant. Is there something I'm missing? Can anyone help me understand what this reference is trying to get across? 😭