The warrior's mate

Evanna though thirty still haven't found her mate but is still hopeful, but Ulrich her wolf and Ambrosia her vampire are both losing patient.
Evanna gets invited to her friend's wedding, she wants to use this as a getaway from the pressure, but one can't run away from fate

Aylin is a young merman, who has been through a lot in the hands of wolves and has a strong dislike towards them, he lives in thalassa kingdom but no one knows his origin.

can fate make something out of this two a lonely alpha and an angry merman

You will have to read the first two books for understanding