“I’m totally interested in science. Look, I took notes.” I showed him my journal from the first meeting with Erin.

“What is this, a love letter?”’

“Look, you’re the one who knows how to take lab notes. That’s what I’m saying: Use me as your lab rat.” And then, knowing the scientist in him could never say no, I added, “You really don’t want to run tests?”

Donnie took a long drink of his rum before looking at me. “What if I can’t bring you back?”

“That’s not going to happen. You know how good my programs are. The experiment worked. The mice prove it, Erin proves it. This is what we wanted all along—the ability to travel through multiple dimensions. Seriously, we’re talking about the Nobel Prize. Let’s just try it, for science’s sake.”

“Luke,” Donnie said. He sat down across from me and tilted his glass in warning. “You’re an incredible programmer, but sometimes you’re also a fucking idiot. Maybe you were successful in our universe, but who knows what damage you caused in that other dimension. So, if we do this, you need to tell me everything from now on. No more lies about where you’re going, no secrets. I’m going to need to know if anything in that world goes wrong.”

“Of course.” I clinked his glass. “Here’s to infinite possibilities.”

We started with a couple hours. Donnie dragged me over Erin’s lake house, hit Enter, and suddenly the lab was gone and I was outside Erin’s house in the cold. It had snowed in her reality and everything looked silvery and beautiful, the lake covered in a layer of snow, the branches all heavy with white. I walked to the front door, reached out and knocked, and there was Erin, opening the door in fuzzy slippers.

“I was wondering if you were coming. Well, welcome to my reality.”

Erin’s lake house was a one-bedroom cabin that had a living room with a sliding glass door to a porch overlooking the lake. On the floor by the window was a steaming cup of tea next to her guitar. I took off my shoes by the door, and Erin and I sat cross-legged on the warm wooden floor facing each other.

“I found the other you on Facebook.” She held up my profile pic on her phone. There was my stupid cowlick, my jawline, my eyes, and my goofy smile. But this guy was way more buff and was standing beside a frizzy-haired woman and two boys who looked exactly like me. He was wearing a tank top that said “God Bless America.”

“I look like I’ve never smoked a joint in my life.”

“Want me to friend you?”

“Please don’t.”