I'm not entirely sure but by the looks of it, the game allows same-sex relationships.
NintendObserver’s select content on My Time At Portia for Nintendo Switch.
They got the Nintendo Switch UI for the Nintendo version of the trailer.
You can actually divorce in this game.
"We didn't set out to make Emily the 'official spouse' of My Time At Portia, it just kind of ended up looking that way."
Yet another indie title brought to you by Team17.