Decadentmazohyst has an open sexuality listed on his info, doesn't that mean interested in men and women too?

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Decadentmazohyst has an open sexuality listed on his info, doesn't that mean interested in men and women too?
I feel like decadentmazohyst's Kyo gets all of the attention and it's sad to watch because his OC brother Tooru seems like a really sweet guy who's struggling to make friends. Sometimes I think his fiancé is the only one who's bothered to get to know him..
I can't tell which thirsty guy around decadentmazohyst is the worst . . .