I'm glad for the one day turnaround here and not the full 48 hours. Enjoying it as always.

The next evening, when Adagio turned up, she was holding a half empty bottle of reasonably expensive beer in one hand and a half-smoked cigarette in the other. She had gone back to the hoodie and jeans outfit and makeup that was, for her, fairly restrained.

Beer and cigarettes, really? That stuff willl kill you.

“Our first night together, when you were worried you might be taking advantage of me,” said Adagio. “It didn't matter to me. Now it does, and I'm not sure I'm in the best frame of mind to have sex with you right now.”

Yeah, doing something like that while drunk, or at least after having had a large quantity of expensive beer, probably not so smart.

“No, really. I know I am. But I also know I can do better.” Adagio smiled to herself. “I can be fucking amazing when I put my mind to it.”

There's a joke I want to make here, but, I'm above it.

"They were supportive to a woman, as Sunset had expected." I don't understand - they were supportive of the woman?
"She alternated between holding her hand. Rubbing her back, and caressing her hair." that period should be a comma (and then no capital 'R' of course)
"Sunst found her face inches away" you see it

eeeee! the picture she left in the book had a real purpose! to show off her style of writing. I'm so excited right now
oh my, how Sunset has grown. I probably meant to mention this in the chapter prior, but this is definitely a trend rather than an upset reaction.
alright... I knew Adagio's speech was going to be feelsome and intense, but this is abusing the situation "I don't even know if I really want what I want anymore." I just love her so much.
"and when Sunset looked over" WTF was she looking the whole time instead?? where is your mind Sunset?!
Ahhh! more callbacks to chapter 2, that taking advantage thing being revisited is absolutely sublime here... actually it also reminds me of Submissive Adagio, being unsure and adorable now with a serving of heartwrenching for good measure

ouch. I just got hit in the face with a prediction. Sunset goes to school and tells the others that she and Adagio are on good terms again but not together. Rainbow Dash steps in and makes an aggressive sexual move on Sunset Shimmer, for reasons? and Sunset isn't having it and it pisses RD off that Sunset would rather be with someone cruel and bad than someone awesome like herself. I know this won't happen, but it's late and that one got away from me