Damon wasn't really one to talk about his feelings. He tended to do something incredibly stupid when he was hurting, and he'd already done that by trying to kill himself. The other thing was to plaster a smile on his face, pretend that everything was alright, find someone to occupy his time for a few hours. And Grey was the person to occupy him for a few hours, distract him from the pain.
He offered her a small smile in return. "Hey. You must be Grey," he said. He stepped inside, wearing a pair of black jeans and a tight fitting button up shirt on. He was glad that she invited him and he was able to step over the threshold without having to make a thing about it.