Sure verse 7 confirms verse 6:
Psalms 45:6-7 NASB
Your throne, O God, is forever and ever; A scepter of uprightness is the scepter of Your kingdom. You have loved righteousness and hated wickedness; Therefore God, Your God, has anointed You With the oil of joy above Your fellows.
I read the entire psalm 45 as being extravagant praise for a king, who is even called "God".
In verse seven, the translation reads: "Therefore God (the king), Your God, has anointed You "
Of course, I don't object to however you chose to read it, but I don't believe my understanding equates to "God Damned Heresy"?