Joanna Yeates told friends that she has been was nervous about spending the weekend alone, a court in Bristol has heard.
The jury was told she was worried because her boyfriend was away for the first time.
CCTV footage showed Miss Yeates and Mr Bellew leaving their office on Park Street, using a cashpoint, then walking up the hill to the Ram.
Mr Bellew told how colleagues and friends from an Irish Gaelic football team were joining them in the pub, which was packed with Christmas revellers.
When asked whether she left before other drinkers, Mr Bellew said: "She would always leave before most of us - when we would go on drinking she would go to be with Greg (Reardon, her boyfriend) really."
Mr Bellew asked her what she had planned for the weekend.
"She replied that she was going to bake some cakes and bread over the weekend because Greg was away," he told the court.
"We had a joke and said she was going to bring them in to the office on Monday morning."
He was alerted that something might have happened to Miss Yeates when Mr Reardon called him at midnight on the Sunday.
Mr Bellew added: "He said he had got back to the flat and found it strange that all Jo's belongings were there."
He was subsequently called by police at 3am on Monday, the court heard.
Jurors heard the first witnesses this morning after visiting Miss Yeates's home which had been preserved with personal belongings and Christmas decorations since she was killed at her home in Clifton.
Her next-door neighbour Vincent Tabak, 33, admits manslaughter but denies murder.
