Newton's Laws of Attraction by M.J. O'Shea
Rory was Ben's oldest and best friend until senior year of high school, when they confessed they'd harbored feelings for each other all along. They enjoyed only a few months of happiness until Ben chose closeted popularity over true love… and he's regretted it ever since.
Eight years later, Ben is out and proud and teaching art at the same high school he graduated from. When he learns the chemistry teacher is retiring, he's excited to meet her replacement until he finds out the brand new teacher is none other than Rory Newton—the first love he's never quite gotten over. Despite a painfully awkward start, it doesn't take Ben long to realize he'll do whatever it takes to win Rory back. But it's starting to look like even his best might not be enough.