From a political standpoint the prince's investigation does make sense especially since he's an heir, even though Maythan was at a place he didn't expect he still was at a wrong place in a wrong time and the Prince should be sceptical because the safety of his people are under question, is it wrong? From a personal level, yes. But as an heir he has to uphold his role for the sake of his people. One person's feeling does not matter for the sake of the whole nation e.g. utilitarianism and honestly for someone with a pragmatic disposition throughout the current chapters Maythan would've somehow understood it but it was framed to be insignificant and shallowed down because of "yaoi world magic making characters go dumb" instead of tackling it with more complexity for my liking. I'm not saying Maythan doesn't have a right to be angry but what I'm saying is that complicated situations require more work for the characters to feel more dynamic instead of making their core personality as "UwU I love you, I'm sorry I made a necessary action don't be mad