Tim was 17 when Kon opened his eyes for the first time. it was an uncalled love at the first sight. getting older, more fights, more arguments, more love to give. The boy inside the tube fell in love with the boy that tried to break him out.
Tim was 20 when he finally reciprocated Kon's feelings. The emotional boy now turned to a man, forcing Kon to act mature too. But he said he loves Kon just the way he is. The loud laugh now just giggles, but it's a laugh at least.
Tim was 35 when he had a desire to have family and kids as Dick and Bruce did. Kon tried to set him up with a woman, but ended up badly, Tim got angry and threw away his ring.
Tim was 40 when Kon finally addressed his concern for Tim's condition. He realized that the boy he loves is slowly getting older and has wrinkles. Even Lex Luthor can't prevent a man from growing older.
Tim was 50 when Kon realized that Tim can't work or move as much as when he's younger. he spends his days as Kon called "a boring old man". He still helped him maneuver through the world, helping him as much as he could.
Tim was 65 when he finally got retired and stopped being vigilantes. finally used Bruce's trust fund as his retirement money, he moved out of Gotham to live peacefully in Smallville. Kon loves to come over and accompany his boring old man watching sun sets as they're sipping tea.
Tim was 75, he realized that Kon was never really growing old. The boy looked as young as he was inside the tube. with his wrinkly hand, he touched Kon's young face, smiling. "You look beautiful as ever."
Kon is the only one that is still standing in front of Tim's grave, even after days.
Getting a distress call from the other world, Kon chose to solve problems in another world.
As they come to Gotham, he looks at one of the rooftops, and meets him.
Kon recklessly flew to him, just to hug him tight and cried in his shoulder, "You look beautiful as ever."