After he met his son, the Capitol let him be. He no longer had to put on a show of any kind for them.
He didn't even have to return to the Capitol for the next games. Haymitch went on his own and returned to tell him that he was still the talk of the city. Rumors were flying on who could possibly be the mother to his son.
(They would never find out. It forever remained a mysterious scandal in the Capitol).