"The Vampire Diaries" star Ian Somerhalder and "Twilight" alum Nikki Reed have reportedly been living together as they continue on with their fast-paced romance.

According to US Weekly, the new couple has moved in together only after three weeks of dating each other. According to an insider for Us, this cuddly pair of thirsty bloodsuckers are now sleeping under the same roof in an Atlanta, Georgia address where Somerhalder is currently on location to film the sixth season of "The Vampire Diaries" with co-star and ex-girlfriend Nina Dobrev.

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"Nikki goes to set every day," the source said, mentioning how the couple also planned to share a place in Los Angeles as well.

Living together has been the second major milestone in the couple's relationship. After two weeks of dating, Somerhalder posted a photo on Instagram last August 5, revealing that they have adopted a horse named Eagle.

"What amazing creatures they are. Wow," the 35-year-old actor wrote. "Thank you @iamnikkireed for snapping this special moment, with our big baby boy."

Last August 22, Somerhalder and Reed were spotted cozying up to each other at the 3^rd Annual "Beyond Hunger: A Place At The Table" Gala by Heifer International in Beverly Hills, California where they apparently shared their mutual love for animals.

Somerhalder had a three-year relationship with co-star Dobrev until they called it quits in May of 2013.

Meanwhile, Reed got divorced from husband Paul McDonald earlier this year after they were married for two years. She also had a brief love affair with Derek Hough from "Dancing With the Stars", who also previously dated Dobrev.

With the 'Twilight" vampire falling for the "TVD" heartthrob, friends of the duo are apparently unsurprised about each other's commitment when it comes to their relationship

"There was always an attraction," a friend told Us Weekly, "so it was easy to slip into dating."

TagsIan Somerhalder, nikki reed, The Vampire Diaries, Twilight, living together