The flow of this story is amazing. From the start, where they were strangers to each other, to where the story is now. It's not rushed, and that's one of the many great things about this fic. The reader and Tommy get to know each other, and though I guess it's quite fast how close they got, the way you wrote it didn't make it seem fast.
Like, they got close quick, but at the same time it makes sense because of how your characterized both Y/N and Tommy. Even with the time skips, it doesn't feel rushed because of how consistent the characters are. You've established what Y/N and Tommy are like with each other, and as individuals.
I love this story because everything I said is not something I see in a lot of stories. I'm not sure what kind not writer you are, if you plan your stories or you're just going with it, but either way, the way this story is written is something that takes a lot of creativity and you really have to have a solid idea of what the characters are like and how the story will flow. The story is consistent and the plot is really freaking good. And I'll say this again, the characterization is AMAZING
Sorry for the long message, I don't comment much on what I read because I usually binge them and totally forget about commenting, soak in figured I'd write it all here!
P.S the messages and twitter posts and stuff? It's a really nice touch and I appreciate that you put that much effort into this story.