It's a polygon heart with organic support as decoration.
You can create your own organic-style supports in PrusaSlicer or other slicer software.
Here are my support settings:

Unfortunately, it is not possible to print it without infill, but you can use 5% lightning infill.
For the stand, I use these settings:

To achieve a smooth top layer without defects, you should use these settings:

Happy Valentine's Day! ❤😊
The author marked this model as their own original creation.