The new Josh Hartnett girlfriend is his co-star of the movie Singularity.
They both are actors and they have been seen together in New York City for the first time, getting cozy with one another and looking like a real couple.
He first came to attention in 1997 for his role as Michael Fitzgerald in the television crime drama series Cracker.
He made his feature film debut in 1998 in the slasher film Halloween H20: 20 Years Later, followed by teen roles in films such as the sci-fi horror film The Faculty (1998) and the drama The Virgin Suicides (1999).
Shortly after arriving in Los Angeles, he caught an improbable break, landing a part in the short-lived but acclaimed drama Cracker, on ABC.
Although the series was cancelled after sixteen episodes, Hartnett had made a name for himself. He performed in small plays and on national television commercials before being cast in his first feature film, playing the son of Jamie Lee Curtis' character in Halloween H20: 20 Years Later.
So their relationship began to get serious and it happened naturally and now they are happy about it.
Even though Josh has had many ladies before starting with Tamsin, he was single since he broke up with the former Josh Hartnett girl Amanda Seyfried.
Hartnett described the second film as "supernatural, but kind of a western".
Josh Hartnett girlfriend was filming another movie called Love, Rosie and he came to visit her in her new work place and they spend a lot of time together.
A source states that Josh is completely into her, because she thinks that she is an amazing woman.
In the early 2000s, Hartnett was approached several times to play the role of Clark Kent/Superman in the early 2000s for a project originally helmed by Brett Ratner, but always turned it down, not wanting to commit to a predicted ten-year role.
Hartnett was chosen as one of Teen People magazine's "21 Hottest Stars Under 21" in 1999, Teen People's "25 Hottest Stars under 25", and one of People magazine's "50 Most Beautiful People", both in 2002.