Stone Hearts by BL Maxwell

Two Guardians meant for war are now given the permission to love. After the last battle had been fought, and any threats have been eliminated, the watcher decrees that the guardians should go forth and live as they would choose. A life of freedom and happiness. But without a mate some of them have no idea how to accomplish this.
Aasim helped Jashik through the mending of his broken wing and his feelings for the injured gargoyle grew during the time they spent together. Aasim does not trust easily, but he has complete faith in Jashik, so when they’re told they should go and enjoy any happiness they can, he’s eager, but also a little hesitant as they decide to begin a life together. Neither of them has a mate, so the prospect of not being alone for eternity is very appealing to him, but still, he’s afraid to open his heart to the other gargoyle.
They were promised a lifetime of peace, but the arrival of an old forgotten foe brings all the gargoyles together to fight against a force that is strong enough to destroy everything they’ve worked so hard for. Love or duty, now they’ll all need to choose.