Lewes Crown Court.
Oliver Cyril Mills was charged by police over incidents in Brighton.
He is accused of assault occasioning actual bodily harm on Gemma Carter.
The 39-year-old is also accused of criminal damage to ceramics during an alleged incident on March 11 this year.
At Lewes Crown Court it was also claimed he made a threat to kill Ms Carter, and that she feared the threat would be carried out.
Mills, of Beatty Avenue, Brighton, spoke to confirm his name during the ten-minute hearing and pleaded “not guilty” to the three charges.
He was represented by barrister Rebecca Upton during the hearing, while Edward Hand represented the Crown Prosecution Service.