There’ll be a lot of change ahead as Elena starts her bloodsucking journey in The Vampire Diaries‘ upcoming Season 4. But if there’s one thing you can rely on to stay the same, it’s that matters of the heart are always complicated in Mystic Falls.

Below, executive producer Julie Plec gives TVLine a status report on two of the show’s biggest love triangles — Stefan/Elena/Damon and Tyler/Caroline/Klaus — and a possible new one involving Jeremy.

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THE STEFAN/ELENA/DAMON OF IT ALL | Elena’s transition into a vampire – and the remembrance of all the memories Damon erased – will have big consequences for her relationships with both Salvatores. “All these things that she’s experienced with Damon and with Stefan will have different context for her as she’s becoming this new person,” previews Plec. “This circumstance, which is pretty horrific, is going to make them all care about each other even more deeply and argue even more intensely and fracture even more greatly and love as deeply as possible.”

Although Damon is back to his Season 1 ways, “it’s certainly not the end of Delena, as anyone might be afraid,” insists Plec. “In fact, in a way, it’s the beginning of the beginning.” But just because Elena now remembers Damon’s confession of love and that she met him first doesn’t mean she’ll be regretting her decision to stick with Stefan. “I wouldn’t want her to be so fickle,” says the EP. However, the regained knowledge will “imbed itself in her brain a little bit. As she continues to look at herself and her relationship and friendship with Damon, it’s all those new pieces of information that will be important along the way.”

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TWO HYBRIDS AND A VAMPIRE | You may have heard that clothes will fly when Tyler and Caroline reunite. But will the hybrid actually be himself during the happy embrace, or will Klaus still be in possession of him? “You’ll just have to wait and see,” Plec replies coyly. “I definitely think that Klaus is going to unwittingly provide a little bit of mistaken identity hijinks in the first episode back.” Meanwhile, a fresh face who has “a history” with Tyler will arrive. “We’ll start to understand that this is a friend of his, who’s been very important to him in the past,” teases Plec. So should Caroline and Tyler fans be worried? “Any time a hot, new girl comes to town, somebody’s got to be worried about something. But Tyler and Caroline have a really solid bond, a really solid relationship. So it takes somebody really special to get in the way of that.”

JEREMY, BONNIE…AND APRIL? | Could Grace Phipps’ Mystic Falls returnee, April, who shares a history with Jeremy and Elena, provide something more than friendship for the younger Gilbert? “We didn’t bring her in to be a love interest for anybody,” says Plec. “But we’re certainly open to seeing where the chemistry flies.” Meanwhile, Jer and his ex Bonnie “are very bonded to each other. In spite of having found a piece of closure in their relationship, they will continue to be drawn to each other emotionally. Whether it’s romantically or not, I can’t really say.”

The Vampire Diaries returns to The CW on Thursday, Oct. 11 at 8/7c.