Christians are perfectly free not to be gay if they so wish. I'm entirely tolerant of their wish only to be heterosexual. What they do in their bedrooms is none of my business, as long it's consensual and doesn't involve children.
They are also entirely free to not take part in Pride marches, hold hands in the street as same sex couples, or for male and female Christians to marry. Again, none of my business, and I'm not going to criticise them for doing it.
I'll even tolerate their bloody church bells waking me up occasionally on Sunday, as I do our local mosque's call to prayer. Personally I find both sounds quite pleasing, even if they do occasionally affect my hangover status.
They also have freedom of speech, like everyone else, to talk about their views if they wish. What they don't have is a special kind of freedom from consequences of that speech, something that no one has.
there's a lot of reworking of the meaning of freedom of speech going on these days.