When Mills assaulted her, he would hit her using a closed fist, and bite her on the neck and face, the victim said, and when his hands got tired from hitting her, he would grab a screwdriver and strike her with the handle, according to the complaint.
The victim told law enforcement she tried to leave, but Mills kept her inside the apartment and continued to assault her, not providing any food or water for five days, it says.
On December 29, the victim was finally able to leave the apartment when Mills left for his father's house, the criminal complaint reads. At that point, the victim gathered up her clothes, ran out the door, and "contacted the first people who she came in contact with and advised them of what had occurred," the complaint said.
The victim was left with "severe bruising to both eyes, bite marks and cuts to both her throat and nose, and severe bruising to majority of her body," according to the complaint.
She was able to identify Mills to authorities based on his driver's license photo, and the Harris County District Attorney's Office then charged Mills with first-degree aggravated kidnapping, the complaint says.
Mills was arrested and a bond of $50,000 was set for him, which he has since posted.
As part of his bond conditions, Mills is not allowed to come within 200 feet of where the victim "lives, works, or attends school," and has to observe a 24-hour home confinement curfew, court records show. His next scheduled court appearance is March 3.
CNN has reached out to Mills' attorney, Chris Denuna, for comment.
CNN has also reached out to Bumble for comment on the incident. (Courtesy, excluding headline, CNN)