You hang out near Regirock's temple as she sits next to you and looks at you curiously... And a bit suspicious...

Regirock: "So... Why did you come back again? I know you aren't planning to catch me."

She stared over at you with a nonchalant expression before turning away and speaking again. Going back to polishing her rocky hands with sandpaper.

Regirock: "So what's with the return? You can just spit it out you know..."