Aguirre has been under major pressure after a poor start to the season and when Simao and Mariano Pernia raced to embrace him after the Portuguese's goal, the Atletico coach admitted: "I almost shed tears.
"It was very emotional. They are very affectionate and it was a hug for solidarity. We are all aware that we've taken an important step forward."
Jose Antonio Reyes impressed on his full debut and Aguirre added: "Reyes played a very attractive game and we must demand the best from him in every match. I am sure the fans will enjoy his play."