At least one character's secret is out on Pretty Little Liars:

"A" exposed Byron's affair to his wife this week, the ramifications of which will be felt on the show's next new episode, "Reality Bites Me."

As the preview below teases, Ezra also had a key question for Aria: Who's A? Will Aria come clean and tell her man everything about the person that's stalking her and her friends? You'll have to tune in and find out.

We certainly will.

[video url="http://www.tvfanatic.com/videos/reality-bites-me-promo/" title="Reality Bites Me Promo"] [/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.