…So if I am reading this right…

Grim here was confused as to why Rose when from IDIOT to MEAN GIRL, so he went to talk to Dave as to why, which he learns about how Rose talks to her friends. So he assumes that the past conversations he had (her future ones) was her trying to be friends, and thus wants to become friends.

I hope they meet the trolls soon, just so I can stop deciphering time shit