Checking Out Love by R. Cooper

Jeremy is a grad student with a quick mind and insatiable thirst for knowledge--and he's currently most curious about is the infamously strict librarian at the small private library attached to his university. He has a weakness for devastatingly clever jerks, so despite his looming thesis, Jeremy decides to pay the famous special collection—and its curator—a visit. But instead of an intimidating beast of a librarian, he finds the librarian's soft-spoken assistant, Benj.

Quiet, shy, guys with pretty eyes and handmade cardigans are not Jeremy's type. Jeremy is too smart, and weird, for anyone so sweet. He'd walk all over them or find them boring after five minutes. Which doesn't explain why he keeps coming back to the library, despite never once encountering the notoriously protective special collections librarian. Perhaps if he weren't so distracted by Benj's surprisingly impressive shoulders and the absolutely charming library he runs, he would notice there's more to Benj than knitted sweaters.