Richard Nixon Was Gay - and the evidence is...

Is (partly) here:

A new book alleges that he had a long-term gay relationship with Cuban-American businessman Bebe Rebozo. They would have male-only hangout seshes, frolicking in and out of the water and discussing their mutual love for Broadway musicals.

I would say that frolicking in the water (and without) is a weak point: all kinds of people frolic. But love for Broadway musicals... yes, it's a tough one to reject.