Hyo's the only one with a good scuse to not communicate properly.
He was used all his life ever since he lost his parents as a kid. He has trust issues (for good reasons) and Dante lied to him about their relationship. Then this crap of not getting even a message saying "babe, i'll be a few weeks/months late because of problems on the us". Let's not forget Dante also gave no explanation about Ano before nor after the Dungeon. We think Ano is Dante's brother but no word for word confirmation was given yet.
I'm pretty sure to Hyo it's not worth asking Dante about anything because he knows Dante will just lie again. And we saw Dante's thoughts so we know Hyo's right to think that way... Even if he is wrong about Dante not loving him.
ARE YOU BOTH STUPID OR DO YOU EAT STONES?