Taunting Thomas

4th year. Voldemort enjoys playing mind games with the Founders, but when his plan fails and Gryffindor deages him to send him living with an abusive foster family, he runs away which leads to a meeting with the last person he wanted to see again- Gryffindor. Worse than that, Gryffindor needs his help, so Tom unwillingly helps- which eventually changes. SPANKING/CP, FATHER/SON, H/C