Does Ganyu Love Rex Lapis?

1 She Is Obsessed With Rex Lapis

After the war, she took a job to serve the Qixing in order to help the people of Liyue just like Rex Lapis had.

Does Ganyu have a contract with Rex Lapis?

Ganyu tells the Traveler she signed her contract with Rex Lapis shortly after the Archon War ended around two thousand years ago. Her character profile states she signed the contract three thousand years ago, during the Archon War. Zhongli says Ganyu has served the longest of those who honor a contract with Rex Lapis.

Does Xiao know Rex Lapis alive?

It is implied that Xiao knows of Rex Lapis' mortal form with evidence from his voiceline "About Zhongli", referring to Zhongli as 'Zhongli-daren' and 'Zhongli-sama' in the Chinese voice and Japanese dub respectively.