Awkward Preview: Kris Polaha Stirs The Pot As Lacey's Ex! Plus, Are Jenna And Jake Over?

Beware the bridezilla! The wedding "doesn't bring out the worst in Ally. It just brings out the complete bats–t crazy in Ally," says Barret Swatek (left). "It just goes balls-to-the-wall crazy. That causes friction with Jenna." A sign of just how insane the events gets: "Ally loses basically the majority of her clothes."

Wedding bells bring Lacy's first love, Ben, back into the picture. "He's like Baze 2.0," says Polaha. "He's this really charming and natural and easygoing guy. I went to high school with [Lacy] and her friend Ally... I show up to give her a ride and stir the pot. I'm a pot stirrer." So does that mean he still has it bad for his ex? "I think you could maybe say that."

"Bringing [Ben] into the wedding really reveals a lot about Lacey's past and also stirs up a lot in her life and Jenna's life," teases Nikki Deloach (left). "You get to go into her past and see why she is the way that she is, why she mothers the way that she does. Ben is a piece of that puzzle."

Did we mention there are awesome flashbacks? "I will just tell you they're amazing. You just wait," laughs Deloach. "'Cause we were in high school in the '90s, it's like bringing the '90s back in a way... Wigs are involved, but not in the way that you think they are."

Will Lacey's ex-boyfriend cause trouble for the already crumbling Hamilton marriage? "Are current boyfriends or husbands ever happy when exes come into the picture?" counters Deloach. Adds Mike Faiola (right): "I'm not entirely sure what the history is between Lacey and the Ben character, but Kevin would have to be pretty damn [blind] not to be aware of it... He's got a tough choice. He's going to have to decide what's the best course of action for the sake of his daughter, first and foremost. His personal feelings for his wife will get involved. There'll be a push and pull. We won't be sure what his final decision is well into Season 2."

Ben's return into Lacey's life will echo Jenna's current dilemma. "Something's about to happen to Jenna," hints creator Lauren Iungerich, adding that the teen's present and her mom's past "collide." In addition, Ashley Rickards (right) says that both the audience and other characters will learn some info they didn't know before. "A lot of things come to a head in [these episodes]."

Is Jenna and Matty's secret about to come out? "Matty's not really in the wedding. I'm allowing Jake and Jenna to have their time," insists Beau Mirchoff (right). "I show up, but it's for good reason, not to sabotage anything." Matty may be playing nice, but this tease from Brett Davern (left) doesn't bode well for Jake and Jenna's special date: "We'll see if they leave it together. They're at a wedding together, but Matty's here, too. There's a lot of conflict." And while Jenna's feelings for her current squeeze are getting stronger, "any time that you end a relationship, there's remorse, even if it's of your own choosing," says Rickards of her character's failed romance with Matty. "You still wish you could go back in time and make things perfect."

A wedding wouldn't be complete without a snafu or two. Valerie finds herself in a dress several sizes too big when she ends up "filling the slot of a bridesmaid at the last minute, because clearly Valerie has absolutely no plans on the weekend and has nothing better to do than to accept the assignment," laughs Desi Lydic (right).

"I take on the role of assistant to the wedding planner," previews Jillian Rose Reed. "Throughout this episode, I'm running around like crazy, trying to get things set up." Meanwhile, Sadie and Ricky are sucking face at the wedding, which is definitely "not helping. Tamara's a little bit of an emotional wreck in this episode."

Will Ally's marriage to Sadie's uncle bring her and sworn enemy Jenna together? "They're definitely opponents, but they do kind of have a few moments of on-the-same-teamship, especially in these episodes with Aunt Ally there," says Molly Tarlov (left). The situation creates "some interesting family dynamics," adds Rickards.