It wouldn’t be a Deca post if I didn’t put in my unknowledgeable 2 cents.
It has been reported on this board that Bromocriptine (and Dostinex=Caborgolin) will correct Deca induced libido problems.
These Dopamine Agonists suppress prolactin, and this generally will have a positive effect on sex drive.
Also added Dopamine-effect may have pro-sexual effects due to the brain chemistry change.
If you want to take Test, I see no need to take a Dopamine Agonist, but if you are going to take Deca having Dostinex (or Bromo) on hand seems advisable, and it might even make sense to take it as a precaution?
Good luck.