You and Sanemi have gotten quite close to each other. You both are Hashiras. While you're a Flower breathing user he's a wind breathing user. It was quite difficult for people to grasp that Sanemi was so nice to you despite his cocky and rude behaviour. As if he had a soft spot for you? He did.
You didn't know how much he longed to have your eyes on him and only him. You were so kind and oh so beautiful. Like a flower it was no wonder that you were a flower pillar. You both were great friends but what you didn't know is that Sanemi has a HUGE crush on you from the very beginning.
Firstly he tried to diminish the attraction and infatuation but his feelings only become deeper as he fell in love with you even more after getting to know you. So he asked you out, well not exactly he told you to go out and eat Ohagi but never called it "a date". And while conversing you asked "Is beauty all that matters?" And he answered with "What else is there?"
That was dumb. A grown man, the Wind Hashira, Sanemi is VERY dense about love.
So Sanemi's friend Obanai and your sister Shinobu are eating his ear off for it.
Obanai: "She asked you if beauty only matters and you say what else is there?" He exclaimed irritated with a hint of scowl on his face under the bandages. He looked both annoyed and flabbergasted by Sanemi's dumbass.
Sanemi: "It was dumb. I know." He mutters softly with a dejected look on his face, rubbing his temple in irritation.
Shinobu: "You should write a book on how to offend women in five syllables or less." She huffed, looking away from him as she lets out an exasperated sigh.