02/09/2012 07:02 pm ET

'The Secret Circle': Jessica Parker Kennedy Previews 'Valentine,' Melissa's Love Affair With The Devil's Spirit

It's Valentine's Day for fans of the CW's "Secret Circle," and the girls aren't exactly thrilled about it. On the Feb. 9 episode, titled "Valentine," Faye (Phoebe Tonkin) decides to throw an anti-Valentine's Day slumber party, and Cassie (Britt Robertson), Melissa (Jessica Parker Kennedy) and Diana (Shelley Hennig) are all on the invite list.

"We totally break out the Ouija board and there will definitely be a pillow fight or two," Kennedy told HuffPost TV via phone. "But even though we call it an anti-Valentine's Day party and say that we don't want anything to do with boys, the first thing that we do is conjure up some cute boy to deliver us pizza. [Laughs.]"

However, what's a slumber party without a bit of drama? Faye and Melissa aren't really on the best of terms, and it has something to do with Melissa's new bad boy love interest.

"Melissa is just branching out and looking for comfort," says Kennedy. "But she's searching in the wrong places right now."

Melissa may still has her eye on Callum (Michael Graziadei), the mysterious drug dealer she met last week; but more importantly, she continues her dangerous love affair with Devil's Spirit, the magical mood-enhancing drug that Callum brought to Chance Harbor.

"By her taking that drug, it was a way for her to escape all of the pain she felt after Nick's death," says Kennedy. "She wants to have fun, and Devil's Spirit makes her feel good. It allows her to take her mind off things, but unfortunately, it's through the wrong medium. She's got to have some of these dark adventures first, before she can become a normal teenager again. Hopefully, she comes out of the other side okay."

But Melissa isn't the only witch dabbling in the Devil's Spirit. To help take her mind off Adam and Cassie, Melissa offers Diana the mood-altering Devil's Spirit, and the first person Diana happens to loosen up around is Lee, who crashes the girls-only party to help Faye achieve her own power. "There's a lightness in the episode, from Melissa and Diana, that is just really delightful," teases Kennedy. "We just had the most fun at that sleepover."

In the wake of Faye and Melissa's fight, expect Melissa to turn to her old friend Diana for comfort.

"Diana and Melissa were really close when they were little, so that's a really comfortable place for her," says Kennedy. "Melissa wants to be herself without the drama, and right now, Faye brings drama everywhere she goes."

While Melissa will start rekindling her close friendship with Diana, she hasn't yet had a chance to become close with fellow circle-sister Cassie. But will things change when Cassie's father John Blackwell comes back to Chance Harbor?

"Melissa is very pragmatic," Kennedy explains. "She has a lot of concerns about John Blackwell, which we all do, but she's still cautious around Cassie, so she's not exactly going to warm up to Blackwell anytime soon. Yet, at the same time, Melissa might start to get to know him a little bit better, and her opinions of him may start to change as time goes on."

"The Secret Circle" airs Thursdays at 9 p.m. EST on The CW.

As much as we love "The Secret Circle," Melissa wasn't the first teenage witch to cast a spell on us. Check out our favorite supernatural characters below.