Romance is an optional feature in Baldur's Gate 3. The player can start a romantic relationship with several different characters, be it a brief fling or long-term. Some relationships can find their peak in sexual scenes, while others will follow different paths. Characters can show interest in the player character regardless of race and gender. More significant relationships will occur only with Companions.
Romance is available in multiplayer, but player characters will not be able to start a romance with each other. All romances are available to any Custom and Origin player characters and some Origin player characters have unique dialogue options during romance. It is possible to be in a relationship with any of the Origin companions, as well as Halsin or Minthara.
While Shadowheart, Astarion and Karlach may permit the player character to add Halsin if asked , other characters will not consent to being in a committed polyamorous relationship. Although a player character can initiate romance with up to two origin companions, only one can be maintained in later stages; one of the origin companions will eventually force the PC to choose between them.
Though they may mention the idea with certain conversations, companions will not initiate any polyamory on their own with other companions. Normally, a player character may initiate the beginning stages of romance with up to two origin companions only.
However, at the tiefling victory celebration after saving the Emerald Grove in Act One, it is possible to add a third beginning romance. While the player character is in a relationship with one or more companions and is traveling or has just left camp they may hear other party members comment or banter on the relationship in some way, if the romanced companion is present.
