Top Shelf — Allison Temple

Martin is a ghost. Well, not really, but he might as well be. Job gone, home gone, self-respect gone, and no one even seems to notice. The only person who really sees him is Seb, the artist who lives above the used bookstore.
Seb haunts the edges of Seacroft in search of beauty. He knows how to excavate the hidden value in abandoned things--whether it's in the pages of forgotten books or in Martin's stuttering attempts to rebuild his life--and transform them into works of art.
Two lost souls, Seb and Martin discover the strength they need to face eccentric townies and their dysfunctional families together. But as friendship sparks toward something more, neither man wants to risk what they've only just found. It takes two to fall in love, but it will take the whole community to bring their beauty to life.

Top Shelf is an 81k slow burn friends-to-lovers MM romance. It features an anxious professor, a drama queen artist, a bookstore that might be haunted, and a full-blown heart-eyes HEA.