Entertainment TV Ian Somerhalder Posts Cryptic Tweet Around Time of Nina Dobrev Split "People change," the Vampire Diaries star wrote shortly after the breakup news By People Staff Published on May 10, 2013 07:15 AM Share Tweet Pin Email Photo: Jamie McCarthy/Wireimage There doesn’t appear to be too public much information behind why Ian Somerhalder and Nina Dobrev split after several years, but a cryptic Tweet may give fans some insight. Just before a source confirmed to PEOPLE that the Vampire Diaries stars called it quits, Somerhalder, 34, Tweeted, “A THOUGHT FOR TODAY: People change and forget to tell each other. -Lillian Hellman, playwright (1905-1984).” Dobrev, 24, hasn’t spoken – or Tweeted – publicly about the split, but has been photographed spending lots of time with fellow newly single lady, Julianne Hough. PHOTOS: 11 Celebs Who Kissed & Dissed