I really really don't like it when someone uses that term when it's wholly inappropriate. As no point did the OP indicate that he was scared of homosixuals, only that he/she didn't want that sort of activity in.
That said, i think this is inevitably part of the territory that comes with allowing the option to marry and was the only real area that held me back from being fully committed to it as there would be no doubt in my mind that it would become a hot issue. I think the main reason is not political however, but the fact that 90% of the people who play Skyrim will be boys, half of whom will probably play as a female character and will not want to marry a male character. Hence you have the very unique situation of a female, controlled by a male, wanting to marry a female simply because that is the user's thing. The morality of that sort of lifestyle aside, people will [censored] regaurdless. I however will look on the bright side, i'll get my dose of fan girl yaoi goodness!
On the other side, we will now undoubtedly have the other preferences coming up, polygamy, solo, and the more extreme preferences that go beyond the normally accepted fetishes. This is the danger of allowing anything other than whats done by 99% of the population, it's just a paradox that isn't winnable.
Have a button 'Homosixuality [On/Off]'
Look I fixed everything.