"Mal... do you remember what you said to me inside of the dungeon?"
Initially, the answer was no.
Malachi had been so focused on everything that he'd heard last night from Nyx that everything he'd said to Luna was buried in the back of his mind.
But as soon as she'd reminded him of it, all of the memories came flooding back to his mind and he became slightly embarrassed.
He remembered how he'd possessively grabbed Luna and proclaimed her to be his, while also declaring his desire not to save the entire world, just the few inside of it he held dear.
As mentioned before, in that form he was in he was sort of on autopilot and had no real control of himself.
The words buried in his heart simply burst forth without any real way to stop them, and he had ended up confessing his feelings to Luna in a terrible setting.
"Ah... I'm sorry about that..." he said as he scratched the back of his head.