Teaming up on the set for a day of filming,  Jessica Alba and  Ashton Kutcher were spotted on the set of “Valentine’s Day” on Tuesday afternoon (September 1).

Seeming to be having a marvelous time, the “Sin City” sweetheart hopped on top of her “That 70’s Show” co-star’s knee while being presented with a red rose.

Due out in theaters in February 2010, “Valentine’s Day” boasts an all-star cast including the likes of Bradley Cooper, Anne Hathaway, Jennifer Garner, Julia Roberts and Taylor Swift, among many others.

The film is about “intertwining couples and singles in Los Angeles breaking-up and making-up based on the pressures and expectations of Valentine’s Day.”