How old is he? And how old are you?

Tl;dr.
Straight foward question to the TS, since in my own opinion, both are still young (in heart).
No offense though. But take it as part of experience in life.
We only live less than a 100 years to taste every single fragment of feelings created by our mind.
Be open and accept the changes. The pain will eventually dissolve and turn into another scar on the heart.

Source : personal experience.