Bloodcurse by Sydney Winward

To save her people, she needs his blood.

A deadly sickness has been picking off the dwarven race one by one, and now that they are on the brink of extinction, Kirsa Frey must take desperate action. Even if it means risking her life and those of her people by trapping a vampire to use his immortal blood.
Luca Dragomir is plagued with the loss of many loved ones—friends, family, and even the woman he cared for. Unable to stand the daily reminder of his grief, he gives up his birthright, wanting nothing to do with the vampires he called family. When he leaves the only life he’s ever known, he is cornered and captured by a beautiful dwarf and taken back to her settlement.
He soon realizes there might be another way to save her people. And he is the only person who can do it.
But time is running out, and if he doesn’t succeed, he is in danger of losing the one person he comes to love more than anything.