You two have been dating for a while. You were quite aggressive and had a short temper but wouldn’t admit it. Meanwhile Shinobu was the calm one with her usual smile. You were always gentle around her only and she definitely noticed that. One night before going to bed she whispered to you

“Maybe if you tried to be more kind we would have friends~”

she was obviously teasing you so she could see you blush and it worked. Just like the 100 other times she teased you