From what I've been able to observe on this forum, the sexual preferences are about identical in percentage to the general population of males. Gender identity does not correspond to sexual preference; there seems to be little or no correlation. Plus there are certain advantages for an SO; increased empathy, a better sense of form, color and, hopefully, appropriateness of dress (something you can assist him with; he will be VERY grateful, if approached diplomatically). Look at this as an opportunity to become even closer. If he wanted to leave, he would have done this long ago. If you're curious, my SO and I were together for 44 years until I lost her in June. She knew as soon as I did, but it took ME 50 years to figure it out (yeah, I know, slow on the uptake).
Best wishes,
Donna
