Select Cut to remove center from stroke. You now have a heart outline that has its own outline.
Duplicate layer. Move new layer to right and down, similar to above image. Hold the Shift key down and use the Magic Wand to add second heart to your selection (select area that was cutout in the previous step). The stroke of both hearts should now be selected.
Zoom in.
Select layer for heart on right (Copy of raster 1) and, with Eraser tool, erase the lines that cross thru the other heart (crossover closest to top... see above image).
Change layers. Select heart on left (Raster 1) and erase the lines that cross thru the other heart (crossover closest to bottom).
Zoom out to normal size.


