# How beautiful is your love

"Your love is wonderful"

# my sister

"my dear" or "my darling". They are not actually brother and sister.

# my bride

This Hebrew word can refer to a woman who is married or to one whom a man has arranged to become his son's wife. See how you translated this in Song of Songs 4:9.

# How much better is your love than wine

"Your love is much better than wine." 

# the fragrance of your perfume than any spice

"how much better is the fragrance of your perfume than the fragrance of any spice"

# fragrance ... perfume

See how you translated these words in Song of Songs 1:3.

# spice

dried plants or seeds that have a good smell or taste