[ Warning : manga spoilers
This is set in the after time skip aka when Hinata joined MSBY
Also this ain't a text thing-
Also this is just a headcanon, it ain't canon-
Also this is like... after they just started dating- ]
AtsuHina : *wakes up in each other arms, on the same bed, bc they're dating dkskks-*
Atsumu : *smirks at Hinata* "Good morning sunshine~"
Hinata : *stares at him, confused*
Hinata : *looks at the window next to him*
Hinata : *opens the window and peeks his head out, staring at the sun*
Hinata : "Hey Mr. Sun! You better say good morning back to my boyfriend!"
Atsumu, whispering and tearing up : "I fuckin' love you-"
---------------@----------------
HAPPY BIRTHDAY SUNSHINE-
WE LOVE YOU SO MUCH DKSKSKSKSK
AAAAAAAAAAAAAA