In love with butterfly?

Shane, Stays to himself, yet is not an ordinary guy.
He is defined by his status in life as being the apex of success with all of the money in the world in his bank account.
He can be rough, strong and sensitive but no one knows about his this side of personality. He is not easy to deal with. He has everything yet he is not satisfied with it.

He has a secret that no one know about.

Women may flock to him due to the mystique that surrounds his persona but he don't let any women around him. He is allergic to them.

Annya, adorable, angelic, ambitious.
She is very easy to be with. You can talk to her easily, and she’s very friendly. She has a “magic” effect that makes people like her. Annya is someone who you can trust.

She knows his secret but he is not aware about that.

Her personality brings a charm to other which make them likes her expect for the one person, he hates her.

It's being 4 years since she is working for him, yet he is not aware of her presence.
When he is aware, she is not there anymore. Left without saying or asking. Not who but what is she? He is still trying to figure that out.