Huuh, have they dated before, how have they dated Cazador & Megicula? Did they know eachother before Vanica was in the picture, was Caz something a mentor for her or did he come into the picture sometime after she was the host?
Cazador and Megicula have a dynamic of a Mistrsss and her most devoted and reverant follower. He came around much later after Vanica became bound to Megicula, putting it to the timeline of the main story, a few years before Asta takes the MK exam.
Cazador knows nothing about Vanica's directly, only aware that Megicula has had many contracts before of various levels from simply cursing a single individual to one's like his and Vanica's where they become bound to the devil. He would only meet her during the post-elf time period when Megicula wants him to leave Clover and officially join the Spade Kingdom, but thats a later story as post elf is a very crazy time period for him.
Their relationship is like the most crazy situationship, as he is so horribly smitten and yearning for Megicula, and she can't understand his feeling nor feel same feelings he does, but overtime being bound to him helps her understand him in her own way and enough to reciprocate in her own way. As she has access to his mind and thoughts, they don't become "official" until he directly opens up to his feelings and without her pressing him over what she sees in his mind.
