Interval 1: September to November

Time passed far too quickly for Fred and Hermione once they arrived back at Hogwarts. Between the Triwizard Tournament announcement, Fred and George's joke shop plans, Fred's increased study load (not that he paid a lot of attention to it), Hermione's study timetable and Fred and George's plan to trick Dumbledore's magical line, the budding couple were having trouble finding time to spend together. Every single time they discussed telling their friends about their relationship something seemed to come up, so they were still sneaking around behind everyone's back. So far they had forced to seek out empty broom closets, empty classrooms, and the common room very late at night just to see each other alone.

Things were made even worse when the Goblet of Fire announced that Harry was a champion and Ron had a complete meltdown. From then on Hermione felt like she couldn't leave Harry alone and Fred felt like Ron was permanently super-glued to him and George. Hermione however, was incredibly happy that Fred wasn't mad at Harry for being a champion. When she had brought it up, Fred couldn't help but laugh:

"You are kidding, right? Harry had no idea what the hell was going on. His entire facial expression was 'what the bleeding heck just happened? I just wanted a quiet year!'"

Of course, Hermione was stressed about what Harry was going to face going into the first challenge (something she hadn't helped by researching the past Tournaments as this meant she knew exactly why the Tournament had been cancelled in the first place). Being so stressed meant that even when she and Fred found themselves together in an abandoned broom closet or classroom, she often felt so frazzled that even Fred's kisses (as good as they were) couldn't distract her.

In the week leading up to the 24th of November, George and Ginny couldn't figure out who was more stressed, Harry, Hermione or Fred. All three of them were driving them mental. Harry seemed to be varying between what George called the "Prior-to-Quidditch-Matches-I-Might-Vomit-Pale" and green on the infrequent occasions that they saw him. Ginny swore that Hermione, who they saw even less than Harry, looked like she had not slept, eaten or even paused for even a moment since Sunday.
Fred had to be worst though, in George's opinion. He was always distracted and seemed to be missing most of the time, even turning up to class out of breath, slightly sweaty and as grouchy as niffler with no gold.

Little did George know, Fred had been sneaking down into the kitchens and then sneaking into the Library with for food for Hermione because he was worried about her. He'd also been trying to catch her before and after classes to try to convince her to go back to her room and take a nap, which hadn't worked in the slightest and just left him feeling helpless.

Thankfully though the first challenge passed and Harry won (and lived!), and Ron was no longer stuck to the twins like glue and was now back in spending time with Harry which happened to free up both Hermione and Fred…