ALL MY CHILDREN alum Jesse McCartney (J.R.) is making another guest appearance on the ABC Family series YOUNG & HUNGRY in tonight's episode, airing at 8:00 p.m. ET. In the episode titled "Young & Too Late," Gabi is freaking out about why Josh called off the wedding, and wonders if she should be with him or McCartney's character, Cooper. But it's another character entirely who makes a shocking discovery! Tune in for all the laughs tonight!