LoveBall variant of MrFozzie's "PokeBall - Fully Functional with Button and Hinge" please visit original Thing for the other parts of the full print.
https://www.thingiverse.com/thing:1615753
Just substitute out "Red_Lid.STL"
Available as a single piece or 2 parts (top and heart gem)
Optional pre support for the heart gem if printed on a 45° angle just align with edge of the gem.
Also included my terrible .STEP file.
Have been able to print the Heart_Lid only supporting the 2 small tabs on the inside.
Have printed Heart_Gem at a 45° or standing with similar results