Which kind of uncomfortable did he mean? Like uncomfortable it felt awkward, or was it physically uncomfortable? In either case, it wasn't really uncomfortable at all. But he wondered if he shouldn't say that.
"It's fine," he assured Gokudera. "I can move if it's not." For example, right now. He turned on his side a little more and scooted around a bit. No, it was pretty much comfortable.
Tsuna was trying to think of other things that couples on a date did. "We don't have to...um...." They didn't have to do THAT, right? He was sure it was not okay for first date. Maybe as 'goodnight'. But it was normal if you didn't, right?!