This is by no means an exhaustive list of reasons that some straight men might engage in sexual behavior with other men. British GQ. For some people, that male or female label may not feel right. Others may feel that they belong to neither gender or to both genders.
I was sad about the moose. Does it result from your actions, or how you feel inside? You have no 'best evidence' beyond what others tell you. This infection can lead to pelvic inflammatory disease and infertility. At a guess, of the many gay men I know, I would say that less than ten percent have ever felt they needed therapy.