Depends if its long pasta (unmixed) or short pasta (mixed).
If its unmixed then you want to heat the sauce first and cover to keep it warm. Then cook the pasta. The residual heat from the pasta should heat the already warm sauce back up.
If its mixed, see the posts above mine.
The Night King would wreck Sauron, just sayin
If we are but brief cracks of light between two infinite darknesses, why do anything but flicker and extinguish?