It is the end of the romance
This is too relevant to me..
Can "Why aren't you letting him go?" also work here?
I think that would require the use of 'đàng' but i may be wrong.
It wouldn't work. The word "đi" in this case is closer to "going on a journey/trip". It doesn't mean letting go of a relationship.
Confusing...
Your owl XD !!