It’s not something special about a specific romantic pairing, but I’ve appreciated that BG3 doesn’t force us to pick and focus on one Iove interest but instead can have a unique romantic arc for a character with changing relationships with companions over time, responding to events in game and helping flesh out the roleplay. It’s not perfect, as I know some users have experienced many party members all hitting their first romance triggers at the same time, but I’ve been fortunate in that they have been more spread out and felt quite natural. The game does tend to have the same dialogue after having broken up with a character as never having romanced them at all, so some imagination and ignoring of things that don’t fit is required.
For example, my chaotic, endlessly curious, commitment-phobic halfling jack-of-all-trades character, Sophy, would say yes to almost anything but stick with nothing. If I recall the sequence of events correctly, she slept with Astarion at the post-grove party, then sometime after that Lae’zel propositioned her, she had a couple of fun interludes with her but then Lae’zel got too intense so had to be let down gently, then Astarion suggested a second round but it came off in the context as clumsy manipulation so she turned him down too (though later in the game they became good friends). Then Wyll tried his luck but went completely overboard with the grand romance and Sophy beat a hasty retreat (I think Wyll might have been buggy at that point as she hadn’t been flirting with him, but as it happened it did feel that it fit with her story). She then struck up an easy-going relationship with Halsin whose attitude to relationships seemed to fit better with hers, and was even curious enough to experiment with some mindflayer sex. But there was no happily ever after, unfortunately, as she ended up as a mindflayer herself, failed some wisdom saving throws at the epilogue party and ended up eating Halsin’s brains
