i dont particularly like unique but i see what youre saying (id consider her a girl tho and therefore straight)
but there's still joe, artie, and sam, and brody
and there's finn who's coming back and is always ~the main character~
it is p gay though
im like 90% sure the transvestite guy is "gay" too, judging by the fact he actually wants people to be a woman (rather than just cross-dressing). that leaves the blonde guy as the only completely straight male main char.
ive never really been into glee but its weird watching as a straight male and being represented as a minority. i don't know why the writers felt the need to add the transvestite character; its almost as if they didnt feel they tackled the whole homosexuality thing in the first 3 seasons despite having the whole kurt / blaine and santana / britney thing going on.