Deputy Mayor Hamish McDouall said he had missed the signs of clinical depression when a previous partner became unmotivated and he was only able to recognise the symptoms in retrospect.
Mr McDouall was speaking at the Connect event for the beginning of Mental Health Awareness Week at the Central Baptist Church in Wicksteed St yesterday.
He said he had put her behaviour down to disinterest in their relationship but later realised that she needed help.
Mr McDouall also spoke about Wanganui people who may be struggling with their mental health after the massive rainfall in June caused their homes to be flooded.
"The emergency may be over but some people's lives are still not back to normal and they need social support to deal with feelings of grief and anxiety that can be lasting."