His Slender Embrace by Amanda Meuwissen

Gaze long into the abyss and you might fall in love.

Eldritch, Tall Man, slender and strange – Cael is all these things, with a presence humans fear, and among monsters allowed visas to the human world, he still feels like an outsider. The first time someone hears his voice, they’re knocked unconscious, and if they look at him for too long, they risk losing their minds or worse. Handy for a monster who means to menace, but not for one seeking love and hoping to one day feed from the energies of passion instead of terror.
He thought the Monster Match app might finally find him a compatible partner, but no one responds to him as a match. Perhaps the only way he’ll know passion is to switch what he’s looking for from romance to the carnal side of human curiosity.
Coming off a bad breakup with a gaslighting ex, Miles Wainwright isn’t looking for love, though he still longs for it and misses the presence of someone else in his home. Even in his work as a graphic designer, he can’t stand up for himself and always ends up doing what is asked of him. He wishes he could give himself over to a partner and trust that they’ll take care of him. For now, he’ll settle for fulfilling a fantasy and hope it helps him heal.
He doesn’t expect to want more from Cael, the strangely alluring monster with a shark-toothed smile and tendrils who matches his request, but even if it means madness to stare long into the abyss, does Miles dare steal a peek?