He was always a mystery to you, but even so you felt that you knew him more than anyone or so he made you believe. When he betrayed Soul Society, you realized that you didn't really know anything about Gin.

You had joined Toshiro's group along with the others, staying in Karakura. You were on patrols at night. And in one you found him, you had so many things to tell him and that was your chance. He only came to see you.