He was there alongside Sigiswald, when the freshly grown Rozemyne came out of the Farthest Hall, if I remember correctly, but we didn’t get to hear his thoughts on the matter, beyond surprise showing on his face.

But considering how everyone says how beautiful Rozemyne is, now that she’s grown, I would suspect that sight only made his crush stronger, rather then dissipating his interest in her. Though I guess he might have some doubt about the age gap, now that it’s more visually obvious, but compared to some of the other age-gaps, their’s isn’t all that big, everything considered. He’s certainly closer to her in age than Ferdinand, and look how vehemently so many people (both inside the story and in the real world) are shipping them, in spite of how vocal they’ve been about not wanting to marry each other.