As requested by anon. :)
This list was aaaaalmost made obsolete when Ichigo and Rukia nearly crossed paths; luckily, Renji was there. As it is, Ichigo and Rukia have still not had their big reunion! So what sorts of things might be said when they do meet?
Rukia: Hello, Ichigo!
Rukia: Why do you always look so surprised when I show up?
Rukia: Aren’t you used to me coming through yet?
Ichigo: You always show up in such surprising ways!
Ichigo: Windowsills! Back stabbing! And now this!
Rukia: Um this time I literally just strolled up behind you, tapped you on the shoulder, and said your name.
Ichigo: Yeah, but you tapped my left shoulder even though you were on the right!
Rukia: Yeah and I really can’t believe that worked.
Rukia: You’re *really* not perceptive, are you?
Ichigo: I’m plenty perceptive!
Ichigo: I notice that you have a bankai now! Your spiritual pressure feels different.
Rukia: It’s true - I do have bankai now!
Rukia: A super awesome, powerful, clad-type bankai!
Ichigo: Sounds ‘cool.’
Ichigo: Because I assume it’s ice related.
Ichigo: And ice is cold.
Rukia: I GET IT
Ichigo: But seriously, congratulations!
Ichigo: You definitely deserve it!
Rukia: And what about you? What new powers have you added since the hot springs?
Rukia: Why are you blushing?
Rukia: Ichigo, you fool! Are you seriously embarrassed because we were in the hot springs together?
Rukia: I was unconscious, you know! I didn’t see anything!
Ichigo: Saw nothing!
Ichigo: Nothing because unconscious!
Rukia: Really? It’s about time!
Ichigo: Yeah, all about how he and my mom met and how Mom was a Quincy and how he’s the former captain of Squad 10 and a Shiba noble and
Ichigo: Oh right I guess this would be the first you’re hearing of it.
Rukia: YOU’RE A SHIBA?
Ichigo: Well I guess technically…
Rukia: HOW IS KAIEN RELATED TO YOU?
Ichigo: He was my cousin…
Rukia: I killed your cousin?
Rukia: I KILLED your cousin?
Rukia: I killed your COUSIN??
Ichigo: I SAW YOUR BUTT IN THE HOT SPRINGS
Rukia: Wait, what?
Ichigo: I saw your butt in the hot springs!
Ichigo: I didn’t mean to!
Ichigo: It sorta bobbed by!
Ichigo: But it was very nice!
Ichigo: And I’m only telling you because you seemed to be getting upset and I wanted to distract you but now that I’m shouting about your butt it seems like maybe a bad idea!
Ichigo: And also come on I’ve heard the story you didn’t murder my cousin it was the right thing to do!
Ichigo: Since I’m Shiba too I think I can tell you it’s all right!
Ichigo: Also I’m sorry about shouting about your butt!
Rukia: Well, at least, in all of this, there’s still one constant.
Rukia: You’re a dork, Ichigo.
Ichigo: I AM NOT