Here is my version of a future episode.

The time: sometime in the middle of season six

Fade In:

Blah blah blah blah blah hey guess what, someone offered Donna
a job!

================================

Donna walked into Josh's office, shut the door behind her. She stood
in front of his desk and announced in a shaky voice, "Josh, we need
to talk."

"About what?" he asked, eyes on the report in front of him.

"I'm giving my notice. I'm leaving."

Now he did look up, startled. "Excuse me?"

"I'm leaving, Josh," she repeated, her voice growing more confident.
"I can't do this anymore."

"What are you talking about?" he asked with increasing alarm.

"I'm talking about this," she said, gesturing to encompass his office,
the two of them, the West Wing. "I need to do more with my life, Josh.
I need to make more of a contribution. And I have to accept that I can't
do that in my current situation. And the more I think about it, the more
I realize -- the more I have to admit to myself -- that there's only one
thing still keeping me here."

"What's that?"

She paused. "You."

He got up from his chair. "Donna --"

"And that isn't enough, Josh," she continued, not looking at him.
"It can't be enough. I can't allow it to be. That's not being fair to
myself." She took a deep breath, met his gaze. "I have to leave.
You have to let me go."

"But I don't want to let you go," he said, taking a step closer to her.

She ducked her head. "You may be impossible to work with, but
you'll find another assistant somehow."

"That's not what I said. I said I don't want to let you go."

"And what does that mean exactly?" she asked.

His mouth worked, but nothing came out. She silently willed him to
say it, to say something, anything. But he didn't.

"You see," she said sadly, as he proved her point. "I can't do this, Josh.
Not anymore." She turned and walked out of his office.

He watched her go, and a thousand different expressions flitted across
his face. He tried to find his voice, but it took a couple of tries. "Donna,"
he finally croaked. Then, louder: "Donna!" No response. He ran out
into the bullpen to see that she was already down the hallway, nearing
the exit. "Donna, I love you!" he bellowed unthinkingly. The bullpen
fell quiet, and everyone turned to stare at him.

Donna stopped, turned back, but didn't come any closer. So he went to
her, striding quickly down the corridor, ignoring the stares and the
whispers that followed him on either side.

"What did you say?" she asked when he was directly across from her.

"I said I love you," he repeated, a catch in his voice, and everyone else
in the room disappeared from his awareness.

Her lower lip trembled and she blinked rapidly. "Really?" she ventured.

His breath rushed out of him as he looked at her. "Desperately."

Their eyes locked, time stopped, and then he clasped her face with his
hands, pulled her to him, and kissed her.

The bullpen erupted into cheers and applause.

He gave her a good, hard, long kiss, and when their lips finally parted,
the applause was still sounding. "Okay, you perverts," Josh yelled
good-naturedly to their audience. "Show's over, back to work!" As
the ruckus died down he took Donna's hand and led her back to his
office, and shut the door behind them.

====================

Blah blah blah there's probably some situation room crap blah blah
blah banter blah blah

=====================

When Josh opened the door to his apartment, Donna was greeted by
candlelight, soft music, and a table laden with all the requisite trappings
for a fancy dinner for two.

"What is all this?" she asked.

He gestured her inside, helped her off with her coat. "I am wooing you,"
he announced dramatically.

"Uh oh," she muttered, but she was smiling as she said it.

"Don't worry," he said quickly. "I ordered in, I didn't try to cook."

"Thank god." She looked around, took in everything he had done for her.
"Josh, I don't know what to say."

"An historic first," he intoned.

"Josh." She hit him playfully. He grabbed her hand, pulled her to him,
and kissed her. Her arms twined around his neck and she kissed him
back.

===========================

Blah blah blah hey someone bombed a federal building in Portland!
We'd better call Josh.

=============================

Josh and Donna lay spooned together on Josh's bed, his arms wrapped
firmly around her slim form and his face buried in the crook of her neck.
They slept peacefully, soundly, cocooned in crumpled white sheets.

The phone rang, shattering the quiet.

Josh jerked awake and Donna's eyelids fluttered. He gently disengaged
himself from her warm body and reached for the phone. "Yeah," he said
sleepily into the receiver.

As he listened to Leo on the other end of the phone, his eyes widened
and he came to full wakefulness. "Yeah. Yeah. I'll be right there." He
hung up the phone, then turned to Donna, who looked at him expectantly.
"There's been a bombing of a federal building in Portland."

"Oh my god." Donna sat up in bed. "Do they know who? Why?"

He shook his head. "Not yet. We'd better go."

"Of course." They leapt out of bed and started pulling on clothes.

==============================

Blah blah blah more stuff at work bombing chaos blah blah blah The End!