Shakespeare aims for a strong a steady relationship that isn't swayed by the fashions of the time.

Sonnet 124

If my dear love were but the child of state,
It might for Fortune's bastard be unfathered,
As subject to Time's love or to Time's hate,
Weeds among weeds, or flowers with flowers gathered.
No, it was builded far from accident;
It suffers not in smiling pomp, nor falls
Under the blow of thralled discontent,
Whereto th' inviting time our fashion calls:
It fears not policy, that heretic,
Which works on leases of short-number'd hours,
But all alone stands hugely politic,
That it nor grows with heat, nor drowns with showers.
To this I witness call the fools of time,
Which die for goodness, who have lived for crime.

Shakespeare returns to his age old habit of talking directly to time itself.

Sonnet 123

No, Time, thou shalt not boast that I do change:
Thy pyramids built up with newer might
To me are nothing novel, nothing strange;
They are but dressings of a former sight.
Our dates are brief, and therefore we admire
What thou dost foist upon us that is old;
And rather make them born to our desire
Than think that we before have heard them told.
Thy registers and thee I both defy,
Not wondering at the present nor the past,
For thy records and what we see doth lie,
Made more or less by thy continual haste.
This I do vow and this shall ever be;
I will be true despite thy scythe and thee.

Shakespeare talks about regifting a notebook that was given to him. He argues that having to write in the notebook will make him more forgetful. Terrible excuse in my eyes!

Sonnet 122

Thy gift, thy tables, are within my brain
Full charactered with lasting memory,
Which shall above that idle rank remain,
Beyond all date, even to eternity:
Or, at the least, so long as brain and heart
Have faculty by nature to subsist;
Till each to razed oblivion yield his part
Of thee, thy record never can be missed.
That poor retention could not so much hold,
Nor need I tallies thy dear love to score;
Therefore to give them from me was I bold,
To trust those tables that receive thee more:
To keep an adjunct to remember thee
Were to import forgetfulness in me.