i think that he doesn't have real feelings for her i think that he most likely still has feelings for Paige and Piper and Paige are alike so i think that is why he may be attracted to her. it is like he is transferring his feeling from Paige to someone who is very like her despite her age.
I think Tyler doesn't know what he wants. He certainly doesn't like Piper the way he was hung up on Paige...I think she is only a distraction for him. I doubt anything will eventuate as Piper is too much of a school girl for him.