We'll see each other a lot more, then!

[Partially because of Mikoto, but now he's curious about Kusanagi--and if the things they're told about soul mates are true.

Presumably by talking with the other person...]

I know...several ways to fall and what plants you shouldn't pick on a mountain?

[That's definitely not what he means. The answer to the question actually being asked is a resounding no, unless Izumo counts the falls.

...now he's more confused, but he won't mention it.]