英和和英

a well‐assorted pair

a well-matched couple

an amiable couple

a well‐assorted couple

a wonderful couple

make a good [lovely] couple

They are a well-matched couple.

an irregularly-united couple

an affectionate couple

They are a loving couple―a devoted couple.

the engaged couple

four couples

a voltaic (or galvanic) couple

a couple united by mutual consent （without the intervention of a go-between）

Like husband, like wife

the relationship that exists between members of a married couple

the yoke of marriage

They are a loving couple.

conjugal affection―connubial love

conjugal love―connubial affection

the intimate relationship between a husband and wife

a conjugal quarrel

married love

the marriage [nuptial] knot

a married couple without love

the relationship of marriage between a stepbrother and stepsister

They are an ill-matched couple.

conjugal affection―connubial love

conjugal love―connubial affection

a newly-wedded pair