What does this mean?

Posted by ESC on November 03, 2003

In Reply to: What does this mean? posted by Terri on November 03, 2003

: Its been playing on me? Or Its been playing on my mind? Thanks

It's been preying on my mind. As in this meaning of "preying." From Merriam-Webster online:

"to have an injurious, destructive, or wasting effect."