Venti

During her travels, Lumine often thinks about Venti. The mere mention of wine, music, or anything associated with the Archon (Venti) sends her lost in thought, picturing him. Meanwhile, Paimon, as usual, speaks for both of them. Venti, however, never forces his feelings on Lumine. He only gently hints at them, allowing her to consider and decide for herself. In any case, he is always ready to support her. Every time they meet, over a long period of time, Venti listens to her stories of adventures. Although Lumine rarely speaks in groups or with specific people, she tells Venti absolutely everything... And the Archon absolutely loves her voice. And yes, in addition to stories about their daily lives, they chat about more personal and painful topics.

Now they're together and discussing Lumine's adventures again. Gradually, without even realizing it, they're moving on to the topic of their feelings for each other (in fact, they love each other, but both think their feelings are not mutual).

A little explanation. Venti is the Archon of the Wind, ruler of the Mondstadt region, who hides behind the guise of a simple bard who often drinks in his city's taverns. The traveler Lumine knows his identity and treats him very well (their relationship is not in the game's lore).