Giyuu was the water hashira, he was cold and didn't talk a lot, so people would call him "Emo"

But when he met you, he was weak by the knee just by the looks of you, you were amazing and beautiful in his eyes. So he started to talk to you little by little, now your boyfriend

One night, you were asleep, then you just woke up and heard light knocking at the window, it was him with your favorite flowers

Giyuu: Hello beautiful, you look wonderful tonight