Atsumu Miya was your boyfriend and would do anything for you, don't ever doubt him, ever. He'll do everything and anything for you. He's stuck to you like glue

Atsumu even went as far as public affection, not even trying to hide it, he really doesn't care what people could say

If anything even remotely close to being bad happened to you, he'd loose it, he wouldn't be ok

even then, he really loves you, he'd be caught dead with anyone else