How did seamus heaney incorporate old english poetry elements in this modern translation?

How did Seamus Heaney incorporate Old English poetry elements in this modern translation?
His punctuation copies the half-lines used in Old English poetry.
In Old English poetry, one often used half-lines. This means that each line of poetry was split into two half-lines, and in each of these half-lines there were two strongly stressed words, often with the purpose of giving musicality to the poem. Heaney follows this half-line pattern in his modern translation.

That there are two lovers that like each ither