Seamus made a face. "That has to be painful. At least to blink anyway, with frozen tears in the way." In a way Seamus was glad that he didn't have to worry about flying all the time. He enjoyed it when he had to, but there was a lot of stress on the shoulders of the Quidditch players. He'd rather watch.
"Aye, pretty much. I think she's pretty satisfied with my progress." But it wasn't going to explain why he was going to be absent in the near future. He could tell by Deans mannerisms that he wasn't buying it. There had to be a way Seamus could explain it without actually saying "I'm illegally training to turn into an animal."
So as they walked down the path, Seamus found the first giant tree they could duck behind, made sure that no one - especially anyone from the group or, heaven forbid, McGonagall - saw him pull Dean behind it.
"Okay look. Have you ever had a secret that was so important that you couldn't tell anyone? Not your family, your friends, girlfriends, and especially your best friends? Not because you didn't want to, but because it could jeopardize the safety of everyone around you?"