Sherlock's sonnet

If I had known that I could have a friend
More loyal than the royal Queen's brigade,
I would have made my selfishness an end
And for a quick delivery have prayed.

Before we met I thought it left to chance
That I would play the game of life alone
Abandoned had I all thoughts of romance
Until we made our partnership our home

But how, my doctor, shall we now progress?
No longer do I wish to tempt my fate-
Uncertainty my impulse does oppress,
What if my own decisions come too late?

If I'm the brain to your unfailing heart,
Then please, I beg you, tell me where to start.