Larian studios really said "We are going to create a Baldur's Gate that is SO queer"
Everyone is romanceable, regardless of gender. You can have he/him, she/her, or they/them pronouns and none of those are tied to what body type or genitals you have (both of which you can pick, independently of each other). The daughter of a literal god who teams up with you is like "me and my girlfriend need to go kiss for 100 years now brb". Every other npc in Baldur's Gate will casually mention their same sex partners. The ringleader of the planes hopping circus is heavily implied to be a trans woman. One person who can join you gets captured multiple times and travels the world, all to save a man he loves.
It's everywhere and it just...is. There's no stopping the plot for the game devs to pat themselves on the back for including a "diverse" character. There's no dialogue option to have a character spoon feed you the idea that they could be interested in the same gender. There's no casual homophobia. No constant casual sexual harassment towards your character just because you chose the "female" option.
And it's so varied. One queer romance is about doing everything to save the other and the reunion is a beautiful kiss. Another is being completely shot down by someone they risked so much for. A man in the streets will say "Get a load of my husband. Such a piece of work. And I'm the one who fell for the blockhead". It doesn't feel cheap if a queer character dies or is a terrible person or if their romance story falls apart completely, because there are just so many. Honestly, that goes for a lot of things in the game, diversity-wise. It's just really nice.