Sounds of the Night by Miranda Bailey

The world has died, but love remains. Time has left the survivors with an overabundance of goods, but scarce resources when it comes to trusting new people. Are they friend or foe? Even as the undead population declines, the question remains: can you trust the living with those you love? For Isadora and Jacob, life offered new opportunities for the kind of love that wouldn’t have been accepted in the old world, when their best friend, Samuel, finds his way to them. But this is the new world. A world where death waits outside, so you’d better take what you can get. A chance encounter with a breathtakingly beautiful woman, a man with evil in his eyes, and a choice await Isadora, Jacob, and Samuel. Is survival more important than love, and can love survive after those choices have been made?
This book was previously published as the When the World Ends Series. It has been rewritten and compiled into one book for those that are 18+ and looking for a little more than the boy meets girl, saves her, and the world, variety of post-apocalyptic romance.