If MC loves her as of the end of the interlope ? Nobody knows, I guess we all hope that the MC was shaped by our choices and thus will react differently to having her back in his life, according to our choices. Mine sure doesnt.
That MC did love her and that the Zoey that is coming back now, discovered that she loves him is without question in my opinion, I mean thats the setup the entire interlope was about, DPC went out of his way to show it and say it. Felt like 80% of all animations were about showing Zoey's facial expressions go from doom to a smile that swallows her ears whenever she thinks about the MC, he's the beacon pulling her back home.
But then again, its only logicial, isnt it ? You cant have Zoey be an obstacle or a problem that needs solving if one of them doesnt have feelings on the line that go beyond friendship. All of us know that the timing of Zoey coming back just after the MC was "forced" to make a choice is not a coincidence, its like many said, another source of Drama, maybe even THE love drama of S03.
But I do hope there is a friendship option in there somewhere, and that its not a black or white yes or no kinda deal in the end.