Damon threatens Bonnie in this clip from The Vampire Diaries. Watch him flip out over Stefan's death here.
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It all comes down to The Vampire Diaries Season 5 finale. Watch the official preview now.
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The Vampire Diaries Season 5 Episode 22 Quotes

You are by far the greatest thing that ever happened to me in my 173 years on this earth.

Damon

Is it a crime for someone so good looking to be so sad all the time?

Silas [on Stefan]