ABANDONED. m/m student hears rumor about strict and mean librarian, goes to library to read some old diary and meets librarian, flirts with him, in the end finds out that he is the feared librarian

[Lisa]

read it beginning of 2016/end 2015: guy goes to library for old diary of some girl, meets a librarian who helps him with the diary. they flirt and student brings the librarian coffee. later finds out that guy is the rumored mean librarian everyone fears. also he is the owner of the library and i think its his grandmothers diaries. librarian has a cat and a house right next to library. student could be asian, i think there are bookshelves in the cover.
thank you in advance

[Lobstergirl, au gratin]

Is it YA, NA, or adult? Is there erotica or explicit sex? Set in the U.S.? Any particular location? Series or standalone?

[Kris]

Lisa, how does the guy first learn about the diary/journal, and why does he want to find it?

Is the library in the librarian's home, a museum, etc.? What kinds of books does it contain?

[Lisa]

its romance and the diary is not really important just his reason to go there. the library is owned by the librarians family for a while.

[Lobstergirl, au gratin]

Lisa, are you still looking for this or did you find it?

[Aerulan]

Checking Out Love by R. Cooper, definitely it.