You need to read it again, the Thai is a bloke also, so, to use your classification method, "a homosexual couple", two men pretending to be women.
can you please show me where the thai female is a thai male. i do not see that anywhere in the story at all. in fact she was married to a thai man before from what i just read....
citing Chalalai’s lack of experience with transwomen due to her previous marriage to a man, fate had different plans in store for the couple.
thanks.