the rumors about felix and dmitri in a sexual or romantic relationship, where did these rumors come from? who started them? were people saying this at the time, like 1913 or so I think is when most people think they were together, or was it only much later that people started wondering?
Male homosexuality seems to upset people and cause comments in general much more than females who prefer their own gender. So straight men who are friends with gay men are often (even today) the subject of gossip about whether or not they are in a gay relationship if they have such friendships. And, it happens in reverse.
This happened to me with my friend Susie who I've known since we were in diapers. When Suze moved to San Jose, we started hanging out and spending time together with her partner. Soon people were asking if I was gay, too. I said, no, Suze and I are friends. (and we still are!)
Dmitri and Felix were friends, they knew one another from childhood when DP was at Ilyinskoe and FY was at the big estate his family had nearby. When Felix returned from university, he was quite dashing and Dmitri was an officer and getting the Russian Olympics started. For a time, Felix moved in with Dimitri and Felix decorated his house.
Were they lovers? Well, there was certainly gossip to that effect and they were beautiful young men. They could also have been friends and not lovers because of their long association. Since they chose not to enlighten us on the topic, I'll go with, it's none of my business and I would of course think nothing different of either man either way.