Never Letting Go — Suzanne Graham

Ree has been Leila's best friend since her first day of work at the nonprofit research organization five years ago. They bonded immediately with a common interest in science and technology, as well as shared addictions to chocolate and Thai food. Being in the minority in a male-dominated field has made their friendship even more precious to Leila.

She can't risk losing her best friend by exploring her new desire for Ree, but as desperate feelings of something wonderful slipping out of her reach flood through her, she wonders how she could ever let go.