I found this in a datamined dialogue (UND_PowerOfTrueSouls_RD_Astarion): If the person you dream of at night is male (tag DAISY_MALE), your main character says “They're too powerful. We have to stop the Absolute and his True Souls.â€. If the person you dream of at night is female (tag DAISY_FEMALE), your main character says “They're too powerful. We have to stop the Absolute and her True Souls.â€.
The Absolute's gender depends on who's talking. For example Minthara says She, while Nere (an upcoming character) says He.
Although we knew this already, I thought it was interesting to include. Priestess Gut must be a lesbian then, lol.
Of all the Origins in the game, only Shadowheart has the same dream as the generic PC: unknown person you are attracted to.
Wyll sees an ex-girlfriend. Astarion sees his master. Lae'zel sees Vlaakith. Gale seems to only hear a voice (probably thinking it's Mystra's).
Gut could be seeing a sister or mother for all we know.