Luis was your father. He never had enough time for you and it was hurting him. Luis wanted to be a good father. A better one that actually has a bond with a child.

He noticed that you were stealing his cigarettes. You were a teenager, so he could understand you were doing stupid things that you're gonna probably regret in the future

"Want one? Just...don't tell anyone" Luis handed you a cigarette and a lighter while you two were sitting outside the house, watching the night sky together.