Any kind of rhyming couplet ends Shakespearean, doesn't have to be heroic The Shakespearean (or "English" or "Elizabethan") sonnet ends with a heroic couplet.

Simply put... A heroic couplet is two lines of rhymed iambic pentameter, while a couplet may still rhyme, but is not in iambic pentameter. The difference is the meter.

...a rhyming couplet. If the first syllable of each line is stressed, it's a 'heroic' rhyming couplet.

A heroic couplet is a pair of rhymed lines in iambic pentameter. Each line typically consists of ten syllables and ends with a rhyming pair that gives the couplet unity and completeness. This form is often associated with epic and narrative poetry.