Seventeen-year-old Marty Pierce leaves small-town Kentucky for London, hoping to explore his sexuality and find work playing oboe, but homesickness, anxiety, and his dwindling savings worsen even as his dreams are coming true.

"In one impulsive moment the summer before they leave for college, overachievers Scarlett and David plunge into an irresistible swirl of romance, particle physics, and questionable decisions. Scarlett and David have known each other all their lives in small-town Graceville, Colorado, where David is just another mountain in the background, until, one day, he is suddenly so much more than part of the landscape. Magnetic, spontaneous, David is a gravitational...