Paul Wesley talks Season 5 for TV Guide

As Stefan suffers and Silas wreaks havoc, Elena’s kindred connection to Stefan will prove stronger than ever, giving her a deep sense that something is seriously wrong. “When you were in love with someone, even if they’re not in your life you have that connection with them; the love is still there whether it’s romantic or not.” Dobrev says. “When she finds out what he’s been through it’s not easy for her.”

“I think what the fans like and what the fans react to is making Stefan dynamic,” he says. “He’s the hero and everyone wants to see the hero’s journey and his fall and his great redemption and I think that’s what it’s all about. So if they can make Stefan dynamic continually then I don’t know if Silas is necessary for the entire length of the show.”

Source: The Vampire Diaries’ Paul Wesley: Stefan Is Screwed Up in the Head This Season