I do find it.. awkward when Lae'zel says she would do me but we're too different, while I DIDNT ASK
To be fair, the whole party seems to be this level of oblivious. Despite your showing exactly zero interest, they will still try to get in your pants, or comment on how they won't when no one asked. At least with Astareon it makes sense, because he doesn't direct his lust specifically your way, he's just a little too eager in general and flirts with all the male party members. But I think just about everyone has at least one NPC they just can't stand and would rather leave in the camp no matter how useful they might be (for me that's Shadowheart and Gale). Having that person you can't stand, don't want to talk to, and won't talk to unless it's absolutely necessary flirt with you is just EXTRA creepy.
It does seem like each of the NPC's has their own sexuality. I haven't played a female character, so I don't know how they respond that way, but Lae'zel and Shadowheart are probably straight or bi, Wyll seems to be straight. Gale might be bi, as he does flirt with the male character at the party with the tieflings, but I shut that down right quick, so no idea there. Astareon is definitely gay (and a bit of a cartoonish stereotype at that) as he flirts with every male member of the party and never either of the women.
What bothers me is that their sexuality is always respected, but the protagonist's sexuality is not only left ambiguous (no choice either at character creation or established through dialogue) and is not respected even if you try to make it obvious that you are not interested. It's hardly unrealistic that there might be one person like this in the party (*Astareon*), but for all of them? Over the years there have been a few memorable times where I was sexually harassed (typically at work), a few times where someone would not understand my politely declining their advances (one woman I politely declined, then she flirted even more and I just flatly told her I was gay, then she introduced me to her daughter).
Personally, I'd just turn the "romance" option OFF since it seems to mean MAYBE having a romance subplot, but DEFINITELY having a sexual harassment subplot.