First, I need to check if there's a Bengali movie titled "3 on a Bed". Wait, I remember that "3 on a Bed" is actually a 2009 Indian Hindi-language romantic drama directed by Abhishek Kapoor. The original title is "Bada Din", and it was later dubbed into Bengali. The user might be referring to the Bengali version. But I should confirm if there's a separate Bengali adaptation or just the dubbed version.