I stood on the balcony without moving.

Through the glass door, Co Tran Chau’s voice was soft enough to sound almost tender.

“Don’t worry. Everything is done.”

“In a few days, I’ll come see you.”

I didn’t need to hear Lam Tuyet’s reply.

I already knew what mattered.

He had made his choice.

And he had made it without telling his wife.

The next morning, I contacted the research institute that had offered me a position back home.

I accepted immediately.

Then I called a lawyer.

When Tran Chau returned that evening, I placed the divorce agreement on the dining table.

He stared at it for several seconds.

Then laughed.

“What are you doing?”

“Getting divorced.”

His smile disappeared.

“Because I’m going to America?”

“Because you decided my future without asking me.”

He frowned.

“Tan Suong, don’t be childish.”

“I already arranged everything. Once I settle there, you’ll come over.”

“No.”

One word.

His expression changed.

I continued calmly.

“I am returning home.”

“You can’t.”

“I can.”

“We’re married.”

“Not for much longer.”

For the first time, Tran Chau seemed genuinely angry.

“After all these years, you’d rather divorce me than live with me in America?”

“Yes.”

He stared at me as though I had betrayed him.

That was the most ridiculous part.

He had lied.

Changed countries.

Changed careers.

Broken the promise that had once brought us together.

Yet somehow my refusal to follow him was the betrayal.

He picked up the divorce papers and threw them back onto the table.

“Fine.”

His voice was ice cold.

“If that’s what you want, don’t regret it.”

I looked at him.

“I won’t.”

He signed three days later.

No hesitation.

No goodbye.

At the airport, he walked toward the gate for his flight to America.

I boarded another plane heading home.

We left the same country on the same day, traveling in opposite directions.

He never looked back.

Neither did I.

At first, Tran Chau’s life seemed to prove him right.

He joined the American university.

Lam Tuyet met him at the airport.

Their photographs appeared constantly on social media.

Coffee shops.

Road trips.

University events.

Thanksgiving dinners.

Under one photograph, she wrote:

“Some people eventually return to where they belong.”

Tuong Ky sent me the screenshot.

I deleted it.

I had no interest in watching.

Back home, I joined the national astrophysics research institute.

The field I had abandoned years earlier because Tran Chau’s work required constant relocation was waiting for me.

The first months were difficult.

I was rusty.

I had lost years.

People younger than me already had publications I could have written.

For a while, I wondered whether I had returned too late.

Then my director placed a research proposal on my desk.

“Lead this.”

I looked at him in shock.

“Me?”

“You didn’t lose your ability, Dr. Tan.”

He smiled.

“You only stopped using it.”

Those words stayed with me.

Two years later, my team published work that attracted international attention.

Three years later, I became deputy director of the project.

And during those three years, Co Tran Chau’s messages slowly changed.

At first:

“Have you reconsidered?”

Then:

“Life here is better than you imagine.”

Then:

“Lam Tuyet and I are only friends. Don’t misunderstand what happened.”

I never answered.

Eventually the messages stopped.

Until one winter evening.

My phone rang.

Tran Chau.

I almost ignored it.

Then curiosity won.

“Hello?”

For several seconds, he said nothing.

His voice, when it finally came, sounded exhausted.

“Tan Suong.”

“What is it?”

“I want to come home.”

I looked out my office window.

Snow had begun covering the institute courtyard.

“Then come home.”

There was a long silence.

“I can’t.”

That made me pause.

“What do you mean?”

He explained slowly.

In order to secure his long-term status abroad and qualify for a position he desperately wanted, Tran Chau had eventually given up his original nationality.

At the time, he hadn’t hesitated.

He had even told Tuong Ky:

“I have nothing left there worth going back for.”

Now he wanted it restored.

His first application had failed.

Then the second.

Then the third.

He couldn’t understand why.

“I’ve submitted everything they asked for.”

His voice became strained.

“My academic record.”

“My publications.”

“My work history.”

“Everything.”

I remained silent.

Then he asked:

“Do you know anyone who can help?”

I almost laughed.

Years earlier, he had decided I would follow him because I couldn’t live without him.

Now he was calling the woman he abandoned to ask for help coming back.

“I don’t.”

“That institute works with government agencies.”

“Tran Chau.”

I interrupted him.

“Don’t involve me.”

His breathing became heavier.

“Tan Suong, I made a mistake.”

“No.”

He fell silent.

“You made many decisions.”

I continued.

“Don’t reduce them to one mistake because you dislike the result.”

He didn’t call again for months.

Then Tuong Ky came to see me.

He looked uncomfortable.

“Tran Chau asked me to talk to you.”

I closed the file in front of me.

“About what?”

“He’s not doing well.”

Apparently, the life Tran Chau had imagined in America had slowly collapsed.

Lam Tuyet had never wanted the ordinary life he had expected.

She enjoyed being admired.

Being protected.

Being chosen.

But after Tran Chau gave up his marriage, his old career path, and eventually his nationality for a future centered around her, something changed.

She no longer admired him.

They argued constantly.

Then Lam Tuyet received an offer on the West Coast.

She accepted without consulting him.

Tran Chau objected.

She gave him almost the same answer he had once given me.

“There’s nothing to discuss. I’ve already decided.”

Within six months, they separated.

Tuong Ky sighed.

“He finally understood.”

I shook my head.

“No.”

“What?”

“He finally suffered.”

I looked directly at him.

“Understanding is different.”

Months later, Tran Chau returned temporarily for an academic conference.

We met unexpectedly in the lobby.

For several seconds, neither of us spoke.

He looked older.

Not physically ruined.

Just diminished.

The certainty he once carried everywhere had disappeared.

“Tan Suong.”

I nodded politely.

“Professor Co.”

The title made him flinch.

“You don’t have to be so distant.”

“We’re divorced.”

“I know.”

His eyes moved toward the conference badge hanging around my neck.

Under my name was my new position.

Director of Astrophysical Systems Research.

He stared at it.

“You became director?”

“Last month.”

A bitter smile crossed his face.

“You really returned to astrophysics.”

“Yes.”

“I always thought you gave it up because you didn’t love it enough.”

I looked at him.

“No.”

For the first time, I told him the truth.

“I gave it up because I loved you too much.”

His face went still.

“And when I stopped loving you enough to sacrifice myself…”

I smiled faintly.

“I found it again.”

Tran Chau lowered his eyes.

Then he whispered:

“My fourth application was rejected.”

I said nothing.

“They told me I could apply again.”

“Then apply again.”

“I have.”

His voice cracked.

“Five times.”

Nothing.

Six times.

Nothing.

Every result remained the same.

He had once believed nationality was simply a document he could exchange whenever convenient.

He had never imagined that leaving could be easy while returning might not be.

Before we separated that afternoon, he suddenly asked:

“If I had gone home with you back then…”

I knew what he wanted.

An alternate future.

A wife waiting at the airport.

A shared laboratory.

A home.

Perhaps children.

A life he had thrown away because he believed I would always follow.

But I refused to build that fantasy for him.

“There is no ‘if,’ Tran Chau.”

He looked at me desperately.

“Do you hate me?”

I thought about it.

Then shook my head.

“No.”

That seemed to hurt him more.

Five years after our divorce, my research team launched the largest project I had ever led.

That evening, while everyone celebrated, Tuong Ky sent me one last message.

Tran Chau’s newest application had failed again.

He had apparently sat alone for hours after receiving the notice.

Then he said:

“She went home once and rebuilt her whole life.”

“I’ve spent years trying to go back, and I can’t even find the door.”

I read the message.

Then deleted it.

Because he was still misunderstanding one thing.

The punishment was never that he couldn’t restore his nationality.

It wasn’t America.

It wasn’t Lam Tuyet.

It wasn’t even losing me.

His real punishment was finally understanding that there are things in life you cannot treat like a passport application.

A promise.

An ideal.

A marriage.

Someone’s devotion.

You cannot discard them when they become inconvenient and assume you can simply apply to get them back when you regret leaving.

Years ago, at that airport, Co Tran Chau walked away without looking back because he was certain I would eventually follow him.

I didn’t.

I went home.

And by the time he finally turned around…

I was no longer waiting where he had left me.