In the fourth season of "Shameless," Fiona married Gus, but a former flame might just be out to come back and try to sweep her off her feet in an upcoming episode. Jimmy, now known as "Jack," returned in the season finale of Season 4. Though he was thought to be dead, he is actually looking for Fiona, alive and well.

According to International Business Times, Jimmy was checking up on Fiona the whole time before reappearing by sending a spy (Angela) in to the diner where Fiona works to check in on her. Angela then tipped her $100 which might just be Jimmy's way to make amends with his ex.

According to Nancy Pimental, the executive producer of the Showtime series, "It shakes up her marriage, but she comes to realize that." Pimental continued that, "Jimmy disrupted her marriage, but she also knows she's a different person now and being with Jimmy is the old Fiona."

So is Fiona finally over Jimmy? Gus is a good guy and that's not usually Fiona's type. Keep in mind, they only got engaged after two weeks of knowing each other. Pimental explained, "She wants to believe in it and believe that she is changing her ways and she's not going for bad boys anymore."

Old habits are hard to break, especially when a lady has her heart broken thinking her boyfriend is dead. According to International Business Times, the next week's installment "Rite of Passage," might just be the episode where Jimmy comes clean and confronts Fiona. Fiona not only will question her marriage because her family will not be there.

But that's not all that will be going on. Carl will learn more about his role as a new drug dealer and Ian will find himself working a new gig as an adult performer. His partner, Mickey, will be less than excited and Lip might just leave everyone high and dry to go to Chicago.

Keep your eyes and ears peeled for the weekly installments of "Shameless," airing on Showtime.