Letter

[addy]

I vote you keep the title. I rather like it... it has the air of something that can be both formal and clandestine. If you want to work it into the poem so your intent isn't lost, maybe begin the poem with a line that suggests salutations, or more personally references the addressee (the second line does this better than the first).

Just adding my two cents

The door was open each morning when it should have been closed.
You knew how sensitive Stan was.
A simple draft and he'd shake like a slaughterhouse pig.
I wonder if he knew? Nobody has walls, darling. Like "darling" as an affectation. Somehow it lets me picture your narrator's voice better
We think we put them up but we don't.
You'd have your back to me when I'd come in,
pretending to clean plates or darn Lily's socks.
(Who darns socks after breakfast?
I'm genuinely curious.) Don't think you need this line? Or, at least, you don't need "genuinely"

At first I think it was the minute popping of buttons which aroused you. Perhaps you don't need "I think"? No reason for the POV to not sound confident, at this point
I had the finest blouse on our street.
Ted was so proud when we went to the pub,
and I ordered a gin while every girl scowled.
Among all the whispers of "how does she dare?"
"with everyone scrimping she shows up in that?"
"Ted must have robbed the post office,"
you looked and sipped your wine,
quietly held by some mystery.

Of course, Is "of course" needed? It may be little things like this that give it a prose feel each time, after I'd sat where Stan had just sat,
you put down a sock or a plate, and turned around,
accessed by that small popping. The silence itself had a charm.
I smoked a cigarette and studied the paneling
like a bored prostitute. I think that was part of the original thrill.
You looked like you'd never seen breasts other than your own before.

Now Stan is dead and the door remains closed.
You gave him the marriage he wanted. Applied lipstick daily,
made meals, accompanied him to the pub now and then,
bore Lily and Daniel, darned Lily's socks, cleaned plates,
and mopped his brow each night near the end.
Now is the time to give me a key. Wish there was more build-up to this final line, as there was a slight leap.May be just me