Play Subnautica, it's great. Go in as blind as possible.

To be more accurate it's either an "everyone's pan in the future" setting or there's at least one business bisexual. There is a recording of two women, one dumping the other, so she can spend more time with "That dumb guy and his dumb robot suit." The sequel features at least two homosexual relationships and one heterosexual one; there's a guy who mentions his husband a few times, a couple of women who sorta pair off, and a man wrestling with his relationship with his wife and daughter. None of these are major plot points to either game.