Ian Somerhalder and Nina Dobrev's split was ''inevitable''.
The 'Vampire Diaries' co-stars have ended their three-year romance and while there is no one else involved in the break-up, friends believe the 10 year age gap between them was a factor.
The 'Vampire Diaries' co-stars have reportedly ended their three-year romance, but vowed to remain professional and cordial on the set of their hit supernatural TV show.
