Homosexual behaviour, homosexual sex, and cross dressing are three different things in my opinion.
I reckon a lot of kids copy their friends, especially in single-gender schools. That could lead them to do the same in adulthood.
Apparently some fellas just like dressing up as women.
There are also guys who don't 'act gay' but like a bit of sausage.
Each to their own, I say, a long as no one 'homos me.'