User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-4531192-20121011165215/@comment-1515612-20121013174434

He's lying. In The Lost Hero, he talked about how he felt like whenever he thought about Reyna he felt like it was wrong to be with Piper. Obviously he had feelings for her. Also, Piper is extremely jealous and Jason may know that so of course he may just be like: Psh, we never had anything.

Also, there is a quote at the top of the thread...