THANK YOUUU this is not him going back and forth, he's not being indecisive here. He literally just wants a proper closure and that's firm decision. GODZILLA
I know right!!! People really like hating Jooin for some reason when this is really a mature decision on his side!
Jooin is quite literally looking for closure here, he isn't trying to find either of them to rekindle his relationship with them.