FIG. 1 is a top perspective view of the reversible heart-shaped mold; FIG. 2 is a bottom perspective view of the reversible heart-shaped mold shown in FIG. 1; FIG. 3 is a bottom plan view of the reversible heart-shaped mold shown in FIG. 1; FIG. 4 is a cross-sectional view of the reversible heart-shaped mold in FIG. 3 along the A-A axis; and, FIG. 5 is a top plan view of the reversible heart-shaped mold shown in FIG. 1.