My mind went entirely blank. I blinked hard, thinking my exhausted brain was playing tricks on me. I stared at the phone. The woman tapped her screen, bringing up her passcode keypad, but the background image remained the same.

It was Mark. There was absolutely no mistaking the small scar above his left eyebrow or the gray quarter-zip sweater I had literally bought him for Christmas last year.

Panic and adrenaline surged through my veins like ice water. I watched, paralyzed, as she unlocked her phone and opened her text messages. The contact she had pinned to the very top of her list was named Mark.

I leaned over just a fraction of an inch, my heart hammering against my ribs so violently I thought I was going to pass out. I couldn’t read the entire conversation, but I saw the last message she had sent him before takeoff: Can’t wait to be home. The Seattle trip was amazing but I miss you.

Seattle.

Mark had told me he was drowning in work at the accounting firm in New York. He had been “too busy” to come to Seattle to help me pack up my dead mother’s house. But he hadn’t been in New York. He had been in Seattle. With her.

The realization hit me with the force of a physical blow. The woman sitting mere inches away from me, the woman whose seat I had just demanded back, was my husband’s mistress. They had been in the same city I was in, playing house while I was crying over boxes of my mother’s old clothes. And now, in some sick, twisted joke of the universe, we were on the exact same flight back to New York.

I sat back in my seat, my hands shaking so badly I had to tuck them under my thighs.

I needed a moment. I needed to breathe. A million thoughts raced through my head. Should I wait until we land? Should I follow her to baggage claim and see if Mark is there waiting for her instead of me?

No. I am not a passive person. And the anger that suddenly replaced my shock was entirely blinding.

I reached up and pressed the overhead flight attendant call button. A moment later, a flight attendant appeared in the aisle. “Can I get you something, ma’am?” she asked.

“Yes,” I said, my voice shockingly steady. “I’d like a double vodka on the rocks. And I’ll buy one for my neighbor here, too. It seems we have a lot to talk about.”

The woman in the window seat snapped her head toward me, her brow furrowed in confusion and annoyance. “I don’t want a drink from you,” she snapped, her voice dripping with venom.

“Oh, I think you do,” I replied, turning to face her fully. I lowered my sunglasses, looking her dead in the eye. “Because I’m pretty sure we share a lot of the same interests. Like Mark, for instance.”

The color completely drained from her face. It was as if I had just slapped her. Her mouth fell open, but no sound came out. She instinctively clutched her phone to her chest, her eyes wide with sudden, absolute terror.

“That’s right,” I whispered, leaning across the empty middle seat so only she could hear me. “I saw your lock screen. I saw the text. I’m Mark’s wife. The one whose mother just died. The one he was supposedly too busy to help.”

For a solid minute, neither of us breathed. The flight attendant came back, awkwardly placing the plastic cups on my tray table, clearly sensing the radioactive tension between us. As soon as she walked away, the woman started to scramble.

“I… I didn’t know,” she stammered, her arrogant demeanor completely evaporating. Her voice was shaking, high-pitched and frantic. “He told me you two were separated. He told me the divorce was almost finalized.”

“We bought a new house three months ago,” I said coldly, taking a slow sip of my vodka. “We are very much together. Or at least, we were until about five minutes ago.”

The next four hours were the longest of my entire life. She spent the first hour quietly crying against the window, desperately trying to hide her face. I spent the time hooked up to the airplane Wi-Fi, forwarding every single shared bank account statement to a new, private account, and texting my sister to go to my house and pack a bag for me. I didn’t text Mark. I wanted him to wait at the airport.

When we finally landed at JFK, she practically sprinted off the plane the second the doors opened. I took my time. I walked through the terminal feeling strangely light, despite the devastation that was waiting for me.

As I came down the escalator toward baggage claim, I saw him. Mark. He was holding a small bouquet of flowers, scanning the crowd. But he wasn’t looking for me. I watched from a distance as the woman from 14A walked up to him. I watched the confusion on his face as she started yelling at him, slapping the flowers out of his hands in front of hundreds of people.

I didn’t stick around to hear the rest of their conversation. I grabbed my bag, walked out to the taxi stand, and left them both behind. My life is a mess right now, but every time I feel like crying, I just remember the look of sheer, unadulterated panic on that entitled woman’s face at 30,000 feet, and I know I’m going to be just fine.