(CNN) Joycelyn Savage, one of R. Kelly's girlfriends who has supported him during his trial and incarceration, began writing about their relationship Saturday in a series of posts on Patreon -- a crowdfunding membership platform.

Savage's posts accuse the embattled singer of controlling and manipulative behavior as well as abuse.

Kelly has been charged with kidnapping, forced labor, and sexual exploitation of a child in federal court, and has pleaded not guilty. He was also charged with several counts of aggravated sexual assault and aggravated criminal sexual abuse in Illinois and New York. Kelly has vehemently denied any allegations of sexual misconduct in the past.

Following the release of her posts, Savage's family spoke with ABC, saying they think she finally worked up enough courage to talk about her experience because Kelly is in jail.

CNN has not been able to independently verify that the posts on Patreon are by Savage. CNN has reached out to Savage, her family and the attorney who has previously represented them. CNN is also aware of other Patreon posts, in which the woman levels several more accusations against the R&B singer, and is working to vet them as well.

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