Chapter 1My Sister In Law Is His Ex

It wasn’t until that sleepless night, deep in the hollow hours of the morning, that I finally saw my marriage for what it was.

I had padded quietly toward our bedroom, my footsteps muffled by the hallway carpet, when the conversation drifting through the door stopped me cold. It felt like a jagged shard of ice driven straight into my heart.

"Simon," a woman’s voice purred, dripping with that practiced, fragile sweetness I’d come to loathe. "She was so angry today. Do you think she’ll figure it out? That I’m not really your 'little sister'—that I’m the woman you actually married first?"

There was a pause. Then, I heard my husband’s voice. It was low, soothing, the kind of tone he usually reserved for me when I was upset. "It wouldn’t matter if she did. Look, I care about her, but when I married you, Lydia, I swore it would be for life."

"So even though we’re legally divorced, that promise stands. I’m never letting you go. You’ll always have a place by my side."

In that moment, every doubt, every nagging suspicion, and every ounce of resentment I’d swallowed for three years finally made sense.

The "depressed younger sister." The constant, suffocating crisis. The way she clung to him. It was all a lie. From the very beginning, I had been the only one playing a role I didn't know was scripted. I was the fool, the outsider in my own home.

Looking back, the signs were everywhere. From the day I married Simon, I knew he came with "baggage"—a delicate sister who needed constant supervision.

On our wedding night, she had burst into our honeymoon suite, sobbing that she was afraid of the dark, forcing Simon to sit by her bed until she fell asleep. When I was hospitalized with a grueling fever, she’d threatened to starve herself, forcing Simon to leave my bedside every night to hand-feed her dinner. Even on our rare date nights, a single phone call claiming she was "on the ledge" would send him racing home, leaving me sitting alone at a candlelit table.

Once, just once, I had lost my temper. I had yelled at her to grow up.

Simon had immediately stepped in front of her, shielding her like a precious relic. He looked at me with a coldness that made my blood run thin. "I only have one sister, Chloe. Wives are replaceable; family isn't. If you can’t handle her, then maybe we shouldn't be married."

At the time, I was so desperate to be "the bigger person" that I actually felt guilty. I had stayed up late that night, planning how to apologize to them both.

How pathetic.

If their bond was so sacred, so unbreakable, then fine. They could have each other. I was done.

* * *

When I brought up the divorce the next morning, Simon was walking toward me with a bowl of fresh Rainier cherries—the expensive ones he knew I loved.

His face went ashen. He nearly dropped the bowl. "Divorce? Chloe, where is this coming from?"

"Is this about yesterday? Look, I was stressed. I shouldn't have snapped at you, but you were being so harsh with Lydia."

I looked at the man I’d spent three years building a life with.

To be fair, when Lydia wasn’t in the picture, Simon was the perfect husband. He remembered my coffee order, handled the heavy chores without being asked, and would buy pounds of my favorite fruit the second it stayed in season, no matter the price.

It was because of that kindness—that curated warmth—that I had ignored the red flags. I’d known he was a divorcee when we met. I’d known about his "troubled" sister. I’d jumped in anyway, thinking love could fix the cracks in his foundation.

But now I saw the truth: his tenderness was a leftover. It was the scraps left over after Lydia had taken her fill.

The woman wasn't his sister. She was the ghost of his past, living in my guest room, sabotaging my life. The betrayal felt like a physical weight in my lungs, making it hard to draw a full breath.

"I’m serious, Simon. I want a divorce," I said, my voice steadier than I felt. "Go live your life with your 'sister.' I’m sure you’ll both be very happy."

Lydia, who had been lurking in the kitchen doorway, instantly dropped the smug grin she usually wore when we argued. She shrank into herself, looking small and victimized, and scurried to Simon’s side, clutching his arm.

Simon instinctively pulled her close. The guilt in his eyes vanished, replaced by that familiar, defensive flicker of anger.

"Chloe, stop it. You’re using divorce as a threat now? That’s low. Have some compassion—Lydia is sick."

For three years, this was the cycle. No matter how reasonable I was, he always framed it as me attacking a defenseless woman.

I let out a sharp, jagged laugh. "Sick? Simon, look at her. Look at how she plays you. Real depression is a quiet, heavy thing. It’s not something you use as a weapon to wedge yourself between a husband and wife every single day."

Simon’s brow furrowed, his jaw set in a stubborn line. "You don't know what you're talking about. Her trauma is specific. She’s fragile, Chloe. She only has me. Is it so much to ask for a little empathy?"

"I gave her three years of empathy!" I snapped. "I stayed quiet when she walked into our bedroom at midnight. I stayed quiet when she faked every 'episode' to ruin my birthday. I’ve been the one holding back, Simon. And you? You never once stood up for me. You treated my hurt like it was a personal flaw."

Simon opened his mouth to argue, but the words seemed to die in his throat. He just looked annoyed, like I was a difficult child refusing to play along.

Lydia chose that moment to let out a theatrical whimper. "Chloe, please... don't be mad. It’s my fault. I shouldn't be here. I’m just a burden..."

She made a move toward the door, the picture of a tragic martyr.

"Don't bother with the act," I said coldly. "You don't have to leave. I’m the one going. I’ll make plenty of room for the two of you."

Simon’s temper finally flared. "Chloe, enough! You’re being hysterical. You have no family, no support system. Where are you going to go if you leave me?"

The room went silent. Simon froze, clearly realizing he’d crossed a line. He reached out, his face softening with a sudden, panicked regret. "Chloe, I didn't mean—"

But before he could apologize, Lydia’s eyes rolled back. She slumped against him, "fainting" right into his arms.

Simon didn't hesitate. He forgot all about me, his face pale with terror as he swept her up and rushed toward the sofa.

Watching them—the way he held her, the way she clung even in her "unconsciousness"—the last flickering ember of love I had for him finally went out.

I didn't scream. I didn't cry. I simply walked into the other room, pulled out my laptop, and began searching for a lawyer.