Chaucer's Works, Volume 1 — Romaunt of the Rose; Minor Poems - Geoffrey Chaucer

But he was double in love and no-thing pleyn,

And subtil in that crafte over any wight,

And with his cunning wan this lady bright;

For so ferforth he gan hir trouthe assure,

That she him [trust] over any creature.

What shuld I seyn? she loved Arcite so,

That, whan that he was absent any throwe,

Anon hir thoghte hir herte brast a-two;