"Pleasure" by Katie Peterson, a teacher at Tufts, was offered by Poets.org's Poem-A-Day on October 25, 2013. A link to the poem, including the poet's notes, may be found here:
The poem consists of 14 lines, an obvious nod to the sonnet form, but there is otherwise no reason to call the poem a sonnet. The first thirteen lines describe various aspects of a meaningful past romantic relationship in the speaker's (presumably the poet's) life. The last line is a real zinger.