An Infinite Loop — Dan Rix

Time travel sucks. You have to squeeze inside this fridge-sized quantum computer and suffer hours of mind-numbing boredom while it loops back in time. No light, barely enough air, total solitude. All the time in the world. It's also like a drug. After her first nine-hour timeloop, teenage loner Iris Strasser craves another loop, if only for the rush. Determined to one up her, pretty boy Cory Holland ignores the warning signs that they're meddling with something dangerous and programs in his own timeloop, daring Iris to make increasingly reckless trips into the past. But when Iris steps into a timeloop and never steps out, leaving Cory with an empty time machine and an ache in his heart, he must come to grips with the unthinkable truth -- he's lost her inside an infinite loop from which she can't escape. He's trapped her in the past, and this time, time travel can't reach far enough back to save her.