Adult virgin man who realizes that losing his virginity is not the purpose of life and sets out on a genuine journey of self improvement (beyond just hitting the gym) to become the absolute best version of himself enjoying all the beauty life has to offer and one day finding a life partner that loves him regardless of how ugly, short or socially awkward he thinks he is.
Generally the Post-Cel will one day lose his virginity from making a real connection with someone after getting over his issues, but the loss of virginity is not what defines the Post-Cel, it is the chadness of his aura that inspires every man in his vicinity.
Yo have you heard about that "Never give up" guy on YouTube?
-No what about him?
He made a video titled "Being ugly: My experience" and a girl in the comments thought he was cute so they started dating and eventually made a vlog of their wedding. He's the true epitome of a Post-Cel.
-Woah, maybe there is hope for me after all