I so want to join this conversation. But I know the answers, so I can't really..Well, she is a rich and beautiful woman who owns a successful business and a giant house, I am sure that she gets a lot of guys who just want her for her money, this allows her to see if he will pursue her because he is attracted/wants her. I could see a situation where either Zach or Emily (because Alexis could be a business rival in such a small town) spill the beans. I just hope that it isn't next update, I want the relationship to be built up a little bit more before the MC finds out that she was lying to him.
The one thing I can say is that it won't be revealed next episode..
Glad you enjoy it though..