Oh great, thanks! So yes, I did talk to him after the planet visit, so I guess I'm just not at the highest point with him. Since the flowchart called it "route division" on the left side, and I ended up on the right side (still in Yren's scene though,) I figured I missed the boat, but based on what you said, probably not! When I went back through to try with all the "right" choices, I did end up getting some more interactions with him, but maybe still not as many as I'd expect before kissing someone, so maybe I'm fine with my original save, haha. xD
Thanks, having a blast!