is he trying to say Moulden is a lesbian?

yuh looks like it lol

I think he's saying that the MC is more to his liking than Moulden, not that she is a lesbian.

My mistake, reading when tired as shit, yes he seems to be either implying she's a lesbian, or that she kitten like females cute. Something tells me Moulding and the Prince are going to find the MC to both their liking and will end up fighting over her attention.