In the fourth season opener, Bonnie and Adam's relationship is tested when he moves in with her and Christy for a few weeks. Also, Christy learns the hard way that it may be a mistake to try and meet men with Jill.
Guest Stars:
Chris L. McKenna, Monica Young, Ayo Sorrells, John-Michael Carlton
Christy considers giving up her dream of becoming a lawyer when Bonnie's ex-girlfriend, Jeanine, offers her a lucrative job in real estate. Also, Adam is very curious about Bonnie's past with women.
Guest Stars:
Rosie O'Donnell, Jennifer Bini Taylor, Dan Aho, Michael DiMente
Bonnie fears she's become undesirable when she catches Adam smoking pot before sex, and Christy tries to smooth things over between them.
Guest Stars:
Diane Delano, Mary-Pat Green, Christopher Goodman, Don McManus
Christy and Bonnie worry that Roscoe has a drug problem when Baxter and Candace catch him smoking pot.
Guest Stars:
Blake Garrett Rosenthal, Sadie Calvano, Matt Jones, Sara Rue, Joey Rich
Christy and Bonnie rush to a sick Violet’s side, only to find out that having mono is the least of her worries.
Guest Stars:
Spencer Daniels, Sadie Calvano, Kevin Daniels, Jason Olive, Andrew James Allen
Christy becomes overprotective and keeps a constant eye on 12-year-old son Roscoe after discovering he's been using drugs and alcohol.
Guest Stars:
Blake Garrett Rosenthal, Matt Jones, Tim Bagley, Jack McGee, Louise Claps
Christy and Bonnie worry about Jill after her cry for help on the anniversary of her mother's suicide.
Guest Stars:
J.J. Boone, Jennifer Chang, Michael DiMente
Christy and Bonnie dip back into illegal activities, and Adam questions their morality.
Guest Stars:
Christina Moore, Ivan Hernandez
Christy and Bonnie have their hands full when Adam’s hard-partying friends come for a visit.
Guest Stars:
Bradley Whitford, Nicole Sullivan
Christy feels left out when Bonnie and the ladies keep Jill’s pregnancy a secret.
Guest Stars:
Michael DiMente
Bonnie encourages Christy to pursue Marjorie's charming nephew, Nick, despite the fact that he's been declared off limits.
Guest Stars:
Chris Pratt, John O'Brien
Christy, Bonnie, Jill and Wendy accidentally eat pot-filled cookies.
Guest Stars:
Amy Farrington, Jonny Coyne, Lauri Johnson
Christy is worried Bonnie is jeopardizing her relationship with Adam when Bonnie connects with a handsome stranger.
Guest Stars:
David James Elliott, Claudia Choi
A heartbroken Bonnie drives everyone crazy, so Christy begs Adam to take Bonnie back.
Guest Stars:
Marcus Toji, Carrie Armstrong, Doc Farrow, Chip Chinery, Mary Pat Gleason
When Bonnie discovers Adam is still close with his ex-wife, Danielle, Christy worries the emotional fallout could jeopardize Bonnie’s sobriety.
Guest Stars:
Wendie Malick, Amy Hill
When Christy and Adam get into a car accident, Bonnie is hurt to discover she is neither of their emergency contacts.
Guest Stars:
Wendie Malick, Carlease Burke
Christy helps Jill adjust to being a new foster mother, and Bonnie has trouble convincing tenants that she’s a good building manager.
Guest Stars:
Dana L. Wilson, Rachel Winfree, David Trice, Julia Lester, Amy Hill
Following the death of Bonnie’s mother, Christy and Bonnie learn that she kept a very big secret.
Guest Stars:
Neil Ross, Leonard Roberts
Christy annoys everyone when she adopts her new boyfriend Brad’s healthy lifestyle, and Bonnie and Adam decide to take the next step in their relationship.
Guest Stars:
Bret Harrison
When Marjorie takes a break from the group, Bonnie becomes the go-to for everyone's problems and Christy tries to overcome a painful memory from her past.
Guest Stars:
Jonny Coyne, Nathan Anderson, Michael DiMente, Mary Pat Gleason
Christy and Jill take Emily to see her biological mother, Natasha, in rehab where they make a surprising discovery, and Bonnie watches Adam’s dog while he’s out of town.
Guest Stars:
Missi Pyle, John Benjamin Hickey, Yeardley Smith, Julia Lester
In the season finale, Christy tries to help when Bonnie gets into trouble with the IRS but, realizing she’s in over her head, she encourages Bonnie to seek help from her newfound brother, Ray.
Guest Stars:
Don McManus, David Anthony Higgins, Leonard Roberts, Lauri Johnson

18 Episodes