Secret Life Spoiler Clip: Ricky Explains the Mystery Girl in Season 5, Episode 5: "Past History" (VIDEO) Tweet July 12, 2012 by Wetpaint Entertainment Staff Related: Secret Life of the American Teenager, Ricky Underwood Credit: Hulu We've been wondering who this "new temptation" for Ricky is and here he explains his old friend to Jack and Adrian. Should we be worried? Watch to find out. Secret Life Season 5, Episode 5: "Past History" airs Monday, July 16 at 8 p.m. ET on ABC Family.