Peter James Shotton, 54, of The Twitten, Albourne, Hassocks, appeared at Crawley Magistrates' Court on Friday charged with six counts of gross indecency against a boy under 16.
Seven days earlier, on April 28, he appeared in court charged with four counts of sexual assault against a seven year old.
Magistrates remanded Shotten in custody following Friday's hearing, but police charged him overnight with a further eight offences of gross indecency against another boy aged under 16.