With Sonnet 135 William Shakespeare embarks on an exercise in making as much use of – and mischief with – his own name as poetic acrobatics will allow.

He doesn't entirely avoid, one might argue, falling off the flying trapeze of rhetorical invention and into the safety net of his overall benign, endearing nature, by occasionally misjudging the fine balance there is to be kept between 'bawdy' and 'lewd', though that in itself is obviously a matter of taste.

The near compulsive punning on 'Will' with six different meanings continues into and throughout Sonnet 136 and will later be picked up again briefly, which does pose the question whether he attaches more significance to the name he shares with many men of his era than simply some self-conscious sexual innuendo...

Sonnet 134 continues the argument from Sonnet 133 and now refines the plea made by that sonnet for the young lover to be freed from the mistress's shackles and develops it effectively into a proposed bargain: since he has put his name on the same bond that ties me to you as a guarantor only, I will forfeit myself to you if you release him back to me.

This, the poet immediately realises, is not, however, going to get him anywhere, because the mistress, already in possession of both, will exercise her full title in both and have them both, and so although, as the sonnet also suggest, the young man was only ever brought into her orbit on Shakespeare's behalf, he too is now lost to the mistress and pays Shakespeare's debt to her, without this being enough though to release either of them from being held captive by and thus enthralled to her.

In his astonishingly frank Sonnet 133 William Shakespeare attempts to come to terms with the fact that his young lover is also having an affair with his mistress.

The sonnet in one fell swoop answers two principal questions: first, what 'black deeds' of his Dark Lady's he may be referring to in the closing couplet of Sonnet 131, and second, who the woman might be that appears in the crisis which besets his relationship with the young man between Sonnets 33 and 42.

And while there is of course no external, cast-iron proof that these sonnets do constellate to form a coherent picture, Sonnet 133 is in fact only the first of several sonnets to strongly suggest they do.

What it leaves no doubt about, and what subsequent sonnets will make even more explicitly clear, is that William Shakespeare is for the second time in the collection talking about a relationship that has turned triangular.