He was TRYING to start a conversation, thanks Tsuna.
"Ah..." Gokudera looked around at the ceiling and then the floor and their backpacks. Ugh. "List up," he grabbed the front of Tsuna's shirt and pulled him closer. "I, amd now YOUR best friend. So you'd better get used to it." If he was going to keep an eye on his brother and Sora, he was going to need an excuse to be around them and keep an eye on them.
Riku grabbed Sora around the middle laughing and spun him around. "What have I told you about the hair, Sora? Its a bitch to brush."