In my mind, there's a distinction between "bad" and "not good". 
 This book was not "bad" by any means. But it certainly was "not good". 
 Despite a promising premise, this book suffers from a very mediocre execution. The writing style is very simplistic and overly descriptive--not in a good way, but in a "telling, not showing" kind of way. 
 The plot is virtually non-existent, unless you want to count "impulsive teenagers make heart eyes at each other" as the plot. In which case, there you have it. Except the teenagers are separated across 100 years. 
 And though I appreciate cyclical time travel as a plot device, the rest of the mechanics are sort of hand-waved away. What I'm sure are supposed to be shocking twists can be seen from miles away--which doesn't necessarily detract from my enjoyment, but it just wasn't particularly original. 
 Everything else sort of falls under the melodrama category. The characters have very little depth and with this clocking in at under 300 pages, you don't really have enough time to see growth. 
 If you're looking to kill about 2 hours on something completely mindless, you could pick this up. Otherwise, I wouldn't bother.