Yes, according to information revealed in Bones, Sweets was abused as a child.
Details of Sweets' Childhood Abuse
The episode "Mayhem on a Cross" (#4.21) provides specific details regarding Sweets' childhood:
- Sweets, like Seeley Booth, experienced abuse during his early years.
- This abuse continued until he was adopted at the age of six.
- Physical evidence of the abuse exists, as he has whip scars on his back.
Therefore, the evidence confirms that Sweets endured abuse as a child.