Pffft. She's such a lovestruck dummy, I can't even be mad. She is indeed amusing to watch flounder around on her emotions.
Still, I'm not a fan of her deception. She's lying to a mind reader she wants to romance. The longer it goes on, the harder things will be when the truth inevitably comes out, and it's not like telling him the truth would be that bad, since it removes the mysticism Lerajie originally would've had on him.
Also, I would think putting all the cards on the table and showing him every memory of Lerajie stealing her man would be a good way to tip things in her favor.