Is your partner cheating or do you just suspect them of cheating? Are you living in Melbourne? Thee are many private detectives in Melbourne that will offer their service at affordable prices.
As you converse with the PI about your case, you may have overlooked something. That is fine, as this is only a first gathering to get a feeling of the case and what it may take to illuminate it.
Individual examiners are normally exceptionally energetic people with authority preparing that empowers them to deal with touchy circumstances with prudence and demonstrable skill.