"No, it is okay. He is just upset. He will calm down. We will talk about it then." Very slowly he sat down on the hardwood floor, "Sit down, take deep breaths with me. It will make you feel better." Again Dark tightly shut his eyes, and with his hands clenched on his knees, began taking deep breaths again. The more he worked through his budding panic attack, which thankfully hadn't fully manifested, the more the conversation with Xander played through his mind.
He didn't think he could have handled the actual argument better than he had, but he did feel like he had been failing him. Always he had thought it was better to give the twins space, and let them lead their interactions, because they were teenagers, and he assumed they wouldn't want to be made to hang out with adults, but clearly it was what at least Xander had wanted from him. And he hadn't given that. So he felt overcome with guilt. But at the same time, he reminded himself, they had just began summer break. During the semester he spent so much time grading, and cleaning, and cooking. All of the teachers he knew spent less time with their children when school was in session, and Xander was going off with Declan nearly every day since they were on break. And he couldn't help that he was an introvert.
But then again: He shouldn't have spoken about his plans with his daughter, then. How did he expect to make them feel? But at the same time, he knew, he remembered talking to the twins about plans for the summer. He felt his breathing speed up again, so he made the conscious effort to slow down, while he tried to visualize his emotions. Their colour, their shape, their texture. Trying to name them, sort them. The specifics, the answers, they were all too complicated to work out at that moment, sitting on the floor, but the emotions, they could be managed. Not repressed, not pushed down--a big misconception about him was that he repressed his feelings, he didn't, not anymore, he attended to them, so they didn't become overwhelming.
"It is all part of the human experience," He murmured, relaxing slightly, still taking his long, deep breaths.