Now, that Grazio was still alive, the author wants to make it to love triangle maybe.
His first love which is her childhood friend.
His true love until now, Irene, in which dont have any memories of him.
Its hard to make a judgement base on this, because MC was still living on the past and placing his decision making with the sudden assumption of his previous life.
This will make his life hard on this one i think. He needs to make his move to secure his childhood friend first and accept that any decision of Princess Irene should be respected, unless the same scenario of fated meetup between them happen again