Well for me, since I'm a girl, it is Ethan who is always saying this crap to me. He told me to take Ampharos to the Lighthouse. I did, and the only thing that happened is that it greeted Amphy. :( It was very anti-climactic. I have no idea why I have been fooled every time into doing what Ethan tells me, but it doesn't seem to do anything at all.