Because You Reject Other People's Pursuit? Never!

From the back cover

Kayla has known Ryan Stede since before she was born. Their mothers, best friends with a taste for mischief, decided that if Kayla were a girl she would one day become Ryan's bride, and the label "Ryan's future Mrs. Stede" has followed her ever since. Ryan, three years older, is brilliant, aloof with everyone else, and quietly devoted to her alone — he drinks only from her glass, does her hair, tutors her, and once ran out to buy her pads and brown sugar when she needed them most. Kayla has been in love with him for as long as she can remember, though he has never said the words.

This semester, the graduate program brings Emily Galley into Ryan's orbit. She trails after him, sulks when Kayla texts him, and flashes victorious looks when he walks away. Kayla tells herself they are only research mates who share a group meeting, but Ryan's cool scoff when she teases him about Emily stings more than she expected.

When cramps leave Kayla miserable and Ryan's replies stop coming, she is left wondering whether the boy who once bought her three packs of pads is still hers at all.