He was possessive of you.. He loved you to the core.

yes he was still aggressive with you, but not as much. but when you started to hang out with the other hashira, it made him irritated.

you had just came home from hanging out with Rengoku and Tengen.. and sanemi was a bit jealous that those other men where around you. "Hmph." He grumbled, crossing his arms and staring his purple eyes at you.