The Vampire Diaries' Kat Graham: Bonnie's Return From the Other Side Is Bittersweet

The Vampire Diaries' Bonnie Bennett is back from the dead! But it isn't without consequences.

Last season's finale saw the Bennett witch (Kat Graham) bring Jeremy Gilbert (Steven R. McQueen) back to life, but in the process, she lost her own. After keeping her death a secret for a few episodes, it finally came out, leading her friends on a mission to bring her back. A few spells, deaths and crazy doppelgangers later, Bonnie is back — but as the new anchor that binds the other side. As part of it, she must also feel the death of every supernatural being, which, of course, she has yet to tell those around her.

"It's very bittersweet," Graham tells TVGuide.com about the return. "On one hand, she has Jeremy and her girlfriends back, but on the other hand, every supernatural being who dies has to pass through her and she has to have that agony."

So what's next for Bonnie and how will her relationship with Jeremy progress now that they're on the same side? Plus: Which of her family members is making a return?

When Bonnie was killed, did you know you'd definitely come back?
Kat Graham: They said she was coming back, but I wasn't sure how they were going to do it and there were a few questions unresolved. But I think it's pretty clever the way they did it.

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I saw you burned the sweater that Bonnie wore every episode this season. 
Graham: To clarify, we have doubles of literally everything we wear in every episode, so they let me burn one out of maybe 10 sweaters. It wasn't a revenge thing, but we had been shooting in that outfit since the summer and a Georgia summer is hot. I was baking so I'm like, "Can Bonnie not take off this sweater for the scene?" But I had keep it on. So I grew to resent it because it was so uncomfortable and itchy, so it was therapeutic for me to be free.

Is that the same reason Bonnie has a new 'do now?
Graham: I'm always trying new things with my hair and I hang out with [executive producer] Julie Plec a lot, and we were out at some event and I was rocking my bob. She was into it and it's been my regular style for a few months now and she got a little inspired and thought it would be good timing for Bonnie to get a new cut anyways.

So how is Bonnie feeling at the beginning of Thursday's episode?
Graham: It's very bittersweet. A lot of the characters have this bittersweet tone to their story lines right now. On one hand, she has Jeremy and her girlfriends back and on the other hand, she's the anchor and every supernatural being who dies has to pass through her and she has to have that agony. So you're going to see her start to find the good and the bad, and what it means for her. She considers herself still a witch, but her powers are gone. So for someone who constantly had to fix so many situations with her powers to have them no longer be active is really frustrating and complicated. But there will be a solution to needing magic sometime soon. There always is.

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Will Bonnie keep the anchor consequence a secret?
Graham: At this point, she doesn't know if it's something that happens with a couple of people or if it's going away — Bonnie likes to feel things out first before she lays it all out. So we'll see her start to unveil this part of her.

How are Bonnie and Jeremy now that they're really together? (For more on TVD relationships, click here.)
Graham: We'll see their relationship develop. I mean, she can finally be with him! It's cool she has this support from him. I know fans earlier were frustrated because they didn't feel like the "Beremy" situation was really explored, so I'm hoping to see more happiness than heartbreak.

Well, it seems Jeremy is shirtless in an upcoming scene, so can we expect some sexy time?
Graham: Jeremy's always shirtless! Because he works out so much, Steven McQueen always finds a reason to take off his shirt, so don't be fooled.

Will Bonnie's mom Abby (Persia White) return?
Graham: I would be very surprised if we don't see Abby this season at all. I would expect to see more of Bonnie's family and their exploration of that and their relationship and her being the only living parent.

Finally, any teases for the 100th episode?
Graham: I know it's going to be a fan favorite. There are some reunions [that] are really exciting.

Are you happy Bonnie is back from the dead?

The Vampire Diaries airs on Thursdays at 8/7c on The CW.

(Full disclosure: TVGuide.com is owned by CBS, one of the CW's parent companies.)