Hartnett Dating Actress Damm?

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November 26, 2010 | 8:50pm EST

Hollywood heartthrob Josh Hartnett has sparked rumors of a new romance with model-turned-actress Katharina Damm.
Damm, who has a featured role in upcoming movie Blue Crush 2, reportedly met the actor earlier this year at a party he hosted, and a source tells the New York Post the couple’s relationship has heated up in recent months.

Hartnett’s love life previously hit headlines when he was linked to actress Abbie Cornish back in April, and he was linked romantically to model Helena Christensen and Kirsten Dunst back in 2009.

But the couple is playing coy about the rumored new romance, refusing to confirm or deny if there is truth to the claims.

Damm and a spokesperson for Hartnett said “no comment.”