I remixed @3DPrinty's Openhearted Box because I thought it would be better if the box is heart shaped when it is closed.

I moved the opening to one side of the box so that it will be covered by the lid when the box is heart shaped, and I moved the lips that connect the two sides together so that it should still go together the same way as the original. Moving the opening means that there are now two unique pieces required to be printed, labelled top and bottom, instead of one piece that could be printed twice like the original