My rubber-ball heart bounced in my chest. Kathleen. I tiptoed to the door and pressed my ear to it. I deciphered some of the words and realized it couldn’t be Kathleen. First of all, she sounded nothing like my half-sister. Second, she had a strong, northern English accent, not Irish, and third, this is what I got from their conversation:

Mal: “It’s just for a few months.”

Woman: “Then what?”

Mal: “Then I take her and we’re leaving. She likes the beach, so maybe we’ll go somewhere with a lot of sun. Greece or Spain. South of France, maybe.”

Woman: “Isn’t she mad at you for having her here?”

Didn’t take a genius to figure out I was her, and I was also about as welcome as gonorrhea.

Mal: “She has no idea about Rory, and I plan on keeping it that way. Makes things simple. I like simple.”

Woman: “I could be simple for you, Mal.”

Mal: “Certainly you can, and you are.”

Whoever she was didn’t pick up on the insult. Shame. A punch in the nuts was just what the doctor ordered for Mal.

Then the noises started. The tongues and thrusts and skin slapping skin. My thighs squeezed, and the hollow place between them ached. I thought of interrupting him, too—you know, an eye for an eye and so forth—but didn’t want to give him the satisfaction of knowing that I heard.

That I cared.

No.

I moved to my room, threw myself onto the bed, flung an arm over my eyes, and shook my head.

Down, girl.

But it was too much, and I was too weak. I shoved my hand into my jeans and played with myself to the sound of Mal having sex with another woman.

It’s not cheating, I told myself the entire time. I’m not touching him. I never will. Callum and I just didn’t get to finish what we’d started the night before.

I decided not to leave my room unless Mal called me for work. It was stupid to think we could patch things up. He was a different person, and I needed to stop making excuses for him in my mind.

I texted Callum a string of messages telling him I missed him, turned my laptop on, and worked into the night. My mom called a couple times, but I sent her to voicemail. Mal and the woman ended up doing the very same thing Cal and I had been about to do the night before, and extra loudly, no doubt so I could hear.

What kind of merciless, ruthless, immoral monster cheats on his wife and also hides the fact that her half-sister and his once-upon-a-time crush is living with him for two months?

Listening to him drilling into a woman who wasn’t his wife put the stamp of disapproval on Mal, and that is very good news.