Responses

I don't think he wants to use her though I feel he definitely likes having the connection to a accomplished magic craftsman. With the little bit of backstory on his noble house essentially creating a magic artifact water system it makes me suspect he had someone in his life like the MC's father who fostered an appreciation for magic artifacts. His interest seems genuine.
Something about this relationship is so refreshing, it actually feels like there is a connection and it's overall just real pleasing to read. Makes me giddy.