I guess SH generally prefers monogamous relationship. She accepts player's affair with Halsin since she is aware of wood elf nature (from wiki: Wood elven romantic and sexual relationships were often polyamorous in nature, members of the race freely engaging or ceasing relations with new partners.) very similar to Mizora case.
Unfortunately the Halsin excuse of him being a wood elf falls flat because my first Tav was a wood elf and she was still not interested in poly or open relationship. Never got a single dialogue option pop up that was related to me being a wood elf. Therefore, it is not acknowledged by the game.
Funny thing is, that poly nature of wood elves was described in one (1) DnD related novel and never set as a rule in any DnD rulebook of any edition. It does not mean, of course, that Larian could not establish such a rule, but if they do, they had to really make it known straight from the character creation screen.
