My views on objective morality

[Mystic]

Bring it back to the original issue. Does morality and God go together such that both prove one another? (double implications of one another?)

MK, I believe the expression you are looking for is "circular logic."  And yes, this does seem to be a case of circular logic.

Double implications exist.

A -> B
B -> A
Therefore A <->B. 

It's not circular reasoning. It's that both imply one another.

If there existed a child, there existed a parent.
If there existed a parent, there existed a child.

That's a double implication in the definition of child and parent.

The same can be true of morality because of it's relationship to God as the source.