The Dopamine has faded, and actor Shia LaBeouf is rumored to have parted ways with his girlfriend, alternative singer FKA Twigs after dating less than a year.

The couple was last seen together in public at the Sundance Film Festival in Park City, Utah in January.

Shia and Twigs is reportedly “on hold”, as they struggle to balance their relationship alongside their busy work schedules, a close source told WENN.com.

The Transformers star and the 31-year-old British singer were first linked last September – shortly after the actor’s split from wife Mia Goth, seen here during happier times in London on October 19, 2014.

Shia and FKA Twigs, who was born Tahliah Debrett Barnett, went public with their relationship in Los Angeles in November.

Sources tell E! News that the couple “have been taking time apart since May, because of her work schedule”. Twigs is currently in the midst of her Magdalene world tour.

“They both have put their relationship on hold,” the insider added. “FKA has been focusing on her tour and she wanted to put all of her heart and soul into it. They are really up in the air right now and were waiting until all of her work commitments were fulfilled to figure it out.”

The source revealed that “communication (between the pair) has been very minimal”, and added: “It’s been rocky between them for a month now.”

Shia has apparently moved on. The actor was spotted cozying up to a mystery brunette at Kanye West’s Sunday Service last weekend.

An eyewitness described the woman as “being cuddly towards him at one point in the service”, and added: “They seemed more than friends and it definitely seemed like they knew each other well.”

FKA Twigs is best known for her “genre-bending” music that made her a household name in England.

The singer was the target of racist attacks online and in public when she dated British actor Robert Pattinson, pictured here during happier times in May 2015.

Shia, 32, is best known for his starring role in the Transformers movie franchise.

Photos by David Becker/GC Images | AKM-GSI