Mandy and the Tentacle Monster by Bebe Harper
Aliens have abducted Mandy and are keeping her as a pet. These aliens seem nice enough, but she needs to figure out how to communicate with them and get back to Earth.
Her alien captor finds everything about his new pet adorable, from her tiny toes to her blunted claws to her shiny mane. He will do everything in his power to make sure that his cute little pet remains healthy and happy.
But what happens when this giant tentacled alien finds out his lovely pet is a sentient person who wants more from him than pets and treats?
This is a slow-burn alien/human romance intended for adult readers.