@Chiamocha this is was supposed to be the anemo statue in the church but now that you mention he might be able to. like some kind of powerful titan or guardian angel.
maybe venti doesn't want to repeat what happened with decarabian and amos so he started to avoid diluc and everything related to him. that's their own way to love him.
when talking about topics and preferences i lean more of platonic or one-sided diluven, romantic its an option but i also know love doesnt mean couple. love itself has many types and shapes, and maybe their bond its not that perfect. they both are scared of love