Nina Dobrev Leaving 'The Vampire Diaries'

Read her heartfelt note.

Dobrev noted, "I always knew I wanted Elena's story to be a six-season adventure, and within those six years I got the journey of a lifetime."

After listing Elena's ups and downs throughout the series, she invited fans to join her as she celebrates and prepares to say goodbye to her character before she moves on to the next chapter of her life.

She concluded, "Fasten your seatbelts. If you think you know what's coming, you don't."

Dobrev's statement was accompanied by a photo of her with series creator Julie Plec. In a statement obtained by The Hollywood Reporter, Plec said, "Saying goodbye to Nina is both bittersweet and beautiful. After six-plus years together, the entire cast and crew of 'The Vampire Diaries' has reached a level of closeness that I don’t think any of us ever expected."

During her time on the show, Dobrev dated her co-star, Ian Somerhalder. They split in 2013, and Somerhalder is now engaged to "Twilight” alum Nikki Reed.

The season finale of "The Vampire Diaries" will air in mid-May. The CW has already renewed the show for a seventh season.