On a side note, I'm not that sure why minorities should be referred to as communities - these days we have communities of chavs, single mothers, on armed lesbian tap dancers etc. The media likes to refer to everyone as belonging to a community for some reason. I suppose gays are more communal than most - seeing they like to share their bodily fluids with anyone, be it in bushes back alleys or whatever. I see at the moment we're in the middle of the Gay Pride season, it was in Manchester on Saturday, where gays travel the length and breadth of the country to dance in tight leather shorts, on the top of some open float. A great shagging time is had by all - and if you object to their antics and take what was once an established view, you're labelled as homophobic and reactionary!
Anyway, I don't know if Boris is gay or not, he just looks gay - he went to one of those ultra Gay education establishments, so maybe he's indulged out of politeness, a sense of adventure or because others forced him to.