The Flotsam and The Jetsam - The Won'ts.

He wants to phone.

But,

He won’t.

If he does,

He’ll just say something with love in it.

So he won’t.

He’d like to send a letter too.

If he did,

She’d learn nothing new.

So he won’t.

She knows anyways.

Or she should.

If she doesn’t,

And if he hasn’t,

He would and should.

But he won’t.

flotsam and jetsam explained here