Everything we see is not necessarily the same as what is in that person's heart, people indeed say if the depth of the sea can be measured the depth of the heart who knows.
Xavier doesn't want to show the burden he is carrying in front of Rose, he tries to smile and be nice, he takes his lover to the master-- the head of the academy is an expert in kung fu and magic, he is not a pure vampire descendant, he has the blood of a fox demon but everyone knows him as a vampire master because vampire blood more dominant, he is very respected and kind, the previous queen liked him very much.
"Good morning master, it's a pleasure to meet you, it's an honor for me because you want to welcome me back here again." Reluctantly, elegantly styled, tugging at the hem of her dress, Rose greeted the master.