Drarry idea (+Some Ginstoria)
Draco and Harry noticing Ginny and Astoria acting weird.
D/H have been acting a little more civil to each other
The Potters and Malfoys eat dinner together every Friday, as planned by G/A.
Cut to G/A cooking together while talking and hidden feelings.
Cue eating with longing glances and oblivious H/D
Cut to night and lie in bed and the gf's look worried.
Morning gf's declare they want to break up.
Boys are shocked when it comes, but could tell it wasn't working.
H/D see each other in Diagon Alley and talk for a bit, learning that both were broken up with on the same morning.
Being the oblivious gits they are, they don't see the connection.
Until they see Ginny and Astoria together holding hands a week later and d/h are just like- o h
Harry's smart and is like, hey we should get together just to get payback.
And so they do
H/D and G/A then start having dinners together
Ginny and Astoria are like, we're so happy for you!
They're not confused at all and genuinely ship it
Eventually with their payback dating, it turns into something real for the both of them
They don't even have to talk about it
They both just know
And just like that everything is the same again but just different and better