Michael Mitreski, 33, stands accused of threatening the victim with a knife following a confrontation between the pair about his alleged infidelity.

Court documents said the woman allegedly overheard Mitreski confess to cheating on her during a gathering at their house on Saturday afternoon.

She confronted him about it in the early hours of the morning and he allegedly hit her on the head several times before allegedly threatening to "bash the f--k out of you" if she left their bedroom.

The woman said she tried to call emergency services when she woke up later that morning however Mitreski allegedly picked up a knife from the kitchen draw and held it against her back, saying "if you f--king do that I will ruin your life, I will f--king ruin your life".

It is alleged Mitreski then moved the knife to the woman's throat and said "do you understand what I will do to you, do you want me to put it deeper in?"

The woman managed to call her brother for help and asked him to phone the police, however it is alleged Mitreski kicked her in the back and hit her again before officers arrived.

They were greeted by scenes of Mitreski throwing items of clothing out of the house.

He was arrested and charged with assault, intimidation and being armed with intent.

Mitreski sought bail in Wollongong court on Sunday, saying he was a project manager in the construction business who was due to start a new job near Jenolan Caves on Tuesday.

He said he could live in nearby Hampton and the job was expected to take at least six weeks.

He agreed not to approach or contact her partner and not to go within 100m of where she lives or works.