Robin was curious. Why would number one ask Haneul if he was going to have lunch? It seemed clear that it would lead to an invitation. At the same time, he felt a bit worried. Number one was an Alpha, and Robin hoped he didn't have any hidden motives for wanting to have lunch with Haneul.
On the other hand, Taeyang's brows furrowed slightly when he heard the pink-haired guy ask Haneul which room he was assigned to. He knew they were friends, but was this normal? Maybe he was being overly sensitive, especially since his understanding of secondary genders came solely from what he had read and not from personal experience. But still... something felt off.
If anyone could read his thoughts, they'd probably tell him that it felt "off" only to him. And that, in itself, already spoke volumes.