dira has some *lovely* stuff exploring the Betan possibilities of the fact that Aral is bisexual, on Barrayar, after Cordelia has matured some more (Memory-era and beyond).
There is also an emergency fic packet for the end of CryoBurn, which I can retrieve the links of sometime when I'm not headed directly off to work; I strongly recommend that upon reaching the last ~20 pages of the book, that you have those fics close to hand. (There was a reason why there were only two Vorkosigan books in the last ~10 years, and that was because the author was not quite prepared to write the thing which I fear to spoil by naming. She had said as much, that [spoiler] happened in the Next Book, and she was not prepared to write that, and because of possessing that spoiler, I was braced; unfortunately it did not have the full weight it should have had just from the book alone, and the fic provided the rest of that impact plus closure.)
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There is also an emergency fic packet for the end of CryoBurn, which I can retrieve the links of sometime when I'm not headed directly off to work; I strongly recommend that upon reaching the last ~20 pages of the book, that you have those fics close to hand. (There was a reason why there were only two Vorkosigan books in the last ~10 years, and that was because the author was not quite prepared to write the thing which I fear to spoil by naming. She had said as much, that [spoiler] happened in the Next Book, and she was not prepared to write that, and because of possessing that spoiler, I was braced; unfortunately it did not have the full weight it should have had just from the book alone, and the fic provided the rest of that impact plus closure.)