Crossword puzzle clue "oxen to each other"

Besties who also literally hate each other's guts but we're besties but we hate each other so much it hurts sometimes

Oxen, to each other

Like each answer in this puzzle - also each word in each clue - in length

Kind of commercial pact where two countries agree to treat each other as well as any other

The other other other woman

Early, or a hint to where each half of each starred answer can be found

Spinal Tap song with the lyric "I love her each weekday, each velvety cheek day"

Complete freedom ... and a hint to each half of the answer to each starred clue