The picture he never thought would be there was right in front of him. The picture was of him proposing to Erie for a date. With a tulip bouquet; her favorite flowers. That one picture made all his feelings come and burst out at once. Him kneeling down with the flowers as she slowly takes the bouquet and pulls him closer into a hug and she says yes.
All the fun and happiness he felt that day made it even harder for him, today.
He sees a tulip flower on the table and goes for it to shatter. Then he starts remembering everything as he's sitting beside the table with the flower vase in his hands.