Hand in hand with his girlfriend Tahnee Sims, the actor attended a Save Our Sons charity gala on September 16 in Sydney.
The couple's night out comes just a few days after Johnny chatted to radio hosts Ryan Fitzgerald Michael 'Wippa' Wipfly about being rushed to the emergency by his girlfriend.
Ruffo, 29, revealed that if he didn't go to the hospital as soon as he did, he could have died.
There was also a chance he could have died during his operation.
"I spoke to the neurosurgeon that did the operation… he said to me look, you know, if you hadn’t come in when you did you would’ve died that night," Ruffo told NOVA's Fitzy & Wippa.
"You would’ve had a brain aneurism and not woken up at all.”
Speaking about the size of the tumour, Ruffo revealed that his neurosurgeon said the tumour could have been growing for two to 10 years.
Ruffo also revealed that in order to get rid of the remaining 5% of the tumour he is currently undergoing radiotherapy.
He will then start chemotherapy for six months, and although his doctors can't give a definitive answer, they are hopeful for a positive outcome.