No, he doesn't consider the idea of Noctis hiding anything from his entourage. But he also doesn't consider why the others need be directly informed either. Ravus is simply a private man, mostly by necessity, despite his honest nature. Perhaps, because of his honest nature after growing wise to the cruel ways Niflheim would use that against him. It's why the tension doesn't quite fade until he's had a moment to remind himself he's not there anymore. There isn't an active threat made by the fact Noctis will tell the others. At least, he hopes there isn't.

"They are protective of you," Ravus murmurs into the slight space between them, just before indulging in that sweet kiss. Slowly, his body catches up with his thoughts, and he relaxes against the younger prince. He can only hope things will go as optimistically as Noctis insists. When he draws back, he offers a measure of concession. "But so long as you think it wise, I will not protest."