Watch Your Back Smilin' Jack on Y&RAuthor:Jillian BoweUpdated:Mar 17, 2015Original:Nov 16, 2009 Smilin' Jack and Dr. Emily better watch it, Mary Jane's not going to be thrilled with them dating... Watch this week's promo after the jump. Thanks again to beautrel for the tip and tvobsessive2008 for the clip!