'Shameless' Sneak Peek: Ian Reveals His Sexual History to Caleb

Ian reveals his sexual history to Caleb.

Ian (Cameron Monaghan) reveals his sexual history to Caleb (Jeff Pierre), and is surprised by his reaction in a brand new episode of Shameless, airing Sunday, March 20 at 9 p.m. ET/PT on Showtime.

In the episode, titled “Paradise Lost," Sean (Dermot Mulroney) officially moves into the Gallagher house as Fiona (Emmy Rossum), intent on getting her marriage right this time, sets out to plan a traditional wedding, bachelorette party included.

Elsewhere, Kev (Steve Howey) is still not happy about V (Shanola Hampton) and Svetlana’s (Isidora Goreshter) pending green card marriage and tries to find a way around it by paying to get her a new identity. While he is off getting scammed, the girls take matters into their own hands.

Watch two sneak peek videos below:

'Shameless' Sneak Peek: Ian Helps Mandy Out of a Difficult Situation

Emma Greenwell and Cameron Monaghan in Shameless

Ian (Cameron Monaghan) helps Mandy (Emma Greenwell) out of a difficult situation in this week's new episode of Shameless, airing Sunday, March 13 at 9 p.m. ET/PT on Showtime.

In the episode, titled “A Yurt of One’s Own," Ian and Mandy find they have more in common than they thought, and Ian opens up about dating Caleb (Jeff Pierre).

Meanwhile, Fiona (Emmy Rossum) tries to make amends with Sean (Dermot Mulroney), who isn’t giving her the time of day.

Elsewhere, Debbie (Emma Kenney) and Queenie travel to Queenie’s (Sherilyn Fenn) rural commune along with Frank (William H. Macy) who is trying to escape G-Doggg (Stephen Rider) who’s after him for stealing his drugs.

Watch two sneak peek videos below:

'Shameless' Sneak Peek: Ian and Caleb Grow Closer

Ian and Caleb grow closer

Ian (Cameron Monaghan) and Caleb (Jeff Pierre) grow closer in this week's new episode of Shameless, airing Sunday, March 6 at 9 p.m. ET/PT on Showtime.

In the episode, titled "Be A Good Boy. Come For Grandma," Ian meets Caleb's friends, and later they both reveal secrets that they have been keeping from each other.

Meanwhile, Fiona (Emmy Rossum), now living with Sean (Dermot Mulroney), attempts to get his son, Will, to like her. He slowly starts to come around, but when Will snags a gun from Carl (Ethan Cutkosky) at the Gallagher house, Sean catches him and is furious with Fiona, worried he’ll lose custody.

Watch a sneak peek below

Dermot Mulroney Lands Major Recurring Role on 'Shameless'

Dermot Mulroney

Dermot Mulroney (My Best Friend's Wedding) has joined season five of the critically acclaimed hit Showtime comedy series Shameless, guest starring in a season-long story arc. Mulroney will play ex-bad boy and recovering addict Sean Pierce, Fiona's (Emmy Rossum) new manager at Patsy's Pies. As their relationship turns flirtatious and their tension grows, will they be able to overcome their weakness for each other?

Dermot Mulroney has appeared in over 65 films including My Best Friend's Wedding, Family Stone, Big Miracle, The Grey, About Schmidt, Stoker, jOBS, J Edgar, Zodiac, Where The Money Is and The Wedding Date. He most recently appeared with Meryl Streep and Julia Roberts in John Wells' adaptation of Tracy Letts' award-winning August: Osage County. He also starred this year, for the first time as a series regular in Crisis. His other television credits include Enlightened and New Girl. Currently, Mulroney is in production on his first horror genre movie, Insidious 3: Into The Further. Mulroney is also a classically trained cellist who has been playing since he was 7 years old. He has recorded with scoring orchestras for many films with Academy Award winning composers including James Newton Howard and Michael Giacchino.