I somehow find myself coming back to this manga,searching for comfort. The slowburn of their feelings seems so realistic. Feelings can't be categorized as black and white, and the mangaka showed this well. There is nothibgbwrong with helping each other move on from your respective lovers. And i think what the MCs share is more than passionate love. They share loyalty, security, and stability. If only i can find such things in real life.
Bokura ga Koi wo Ushinau Riyuu