No, it is not appropriate at all. Such stories involve private and sexual content that should be kept within the boundaries of a private and consensual relationship. Sharing this kind of story in public violates privacy and is not in line with good social ethics.
No. It is not proper English. The use of 'cum' in this context is vulgar, and 'ovr' is an incorrect spelling. A proper phrase would be something like 'calling him to come over for a story about sex' if that was the intended meaning, but even that would be a rather racy or inappropriate statement in most contexts.
This is a rather unclear and ungrammatical phrase. 'Cum' is a vulgar term for orgasm, and 'ovr' might be a misspelling of 'over'. But overall, it's not a proper or commonly understood expression in normal language.
Rather than seeking out such potentially offensive and inappropriate stories, we can explore classic vampire literature like 'Dracula' which is full of mystery, suspense, and complex characters. It offers a more enriching and acceptable reading experience without delving into improper sexual content.