Veteran Aerosmith rocker Steven Tyler has reportedly moved in with his 28-year-old girlfriend and personal assistant.

The 67-year-old frontman has been romantically linked to Aimee Ann Preston in recent weeks and they are said to have grown increasingly close while he was working on his solo country album in Los Angeles and Nashville, Tennessee.

Tyler went public with his new love at Elton John's annual star-studded Oscar Viewing Party last month, when he was snapped holding hands with his long-time assistant, who has previously worked for Victoria Beckham and Christina Aguilera, editors at PageSix.com report.

Tyler's new love is 10 years younger than his daughter, actress Liv Tyler, who is currently pregnant with her third child.

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The couple was first spotted looking close on a motorcycle ride in Hawaii in 2014 and despite the near 40-year age gap, things are reportedly going well, with Preston seemingly keeping things professional whenever they're working.

"I never see them holding hands or anything of that nature when I'm around them," a source told PageSix.com.

"She's (Preston) always with him and always making sure his car is ready. They're never affectionate. I was at an event with them and she was so on it.

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"The rocker was previously engaged to Erin Brady, who was 25 years his junior, in 2011, but they called time on their relationship in 2013.

Later the same year, Tyler was reportedly seen kissing The Hunger Games actress Leven Rambin, who was 22 at the time.

- AAP