heterosexual couple; opposite-sex couple
Refers to a romantic pair consisting of a man and a woman. Often used in contrast with 同性カップル (same-sex couple).
This drama depicts the daily life of a heterosexual couple.
The legal differences between opposite-sex and same-sex couples were discussed.
Compound of 異性 (いせい, 'opposite sex') and カップル ('couple'). A straightforward modern term.