Song of Solomon 8:6 says love is as strong as what?

Answer: Death

"Set me as a seal over your heart… For love is as strong as death." Verse 7 adds that mighty waters cannot quench it.

“Set me as a seal over your heart, as a seal upon your arm. For love is as strong as death, its jealousy as unrelenting as Sheol. Its sparks are fiery flames, the fiercest blaze of all.”— Song of Solomon 8:6 (BSB)