I'm confused about the word "initiate". Can I say "He initiated a dropped talk with her"?
My friend told me initiate is for something never happened, and he said in this case I should replace initiate with resume.
But if he's correct, how am I going to explain it's he that talked to her first after a "cold war" between the two.
He is the one who re-established the communication between them" - a bit formal.
He's the one who broke the ice between them.
He is the one who initiated the reconciliation. This is alright - according to your friend's semantics, which are sound enough - because the reconciliation hadn't happened before.