In the court papers obtained by PEOPLE, Voronov claims that their Japanese Chin was purchased by Weir but was "a 'make-up gift' after [Voronov] caught [Weir] sexting with another man."
Voronov says that he has been the primary caretaker for Tëma and is "extremely attached to him" and "devastated" by Weir's removal of the dog from their home.
"I trained him, walked him, took him to the veterinarian," Voronov writes. "As a direct result of often being home alone while [Weir] was promoting his 'image,' it is Tëma that kept me company."
The Olympic figure skater has also expressed devotion to the pup, posting a photo on Instagram of the pooch Monday with the message: "Such a happy face to come home to after a very long day!"
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