The couple had a rocky path to love. They found each other after season 10 filming wrapped and their on-air marriages had fallen apart.

But the couple agreed that it was their willingness to discuss a major taboo - financial stability - that ensured they would get to spend many future Valentines Days together.

"Understanding each other's attitudes towards money when we first started dating has set us up for more open conversations around our finances in the long-term," Ms Ellis said.

Money is a taboo topic among many Australian couples.

A staggering 91 per cent of people said that money causes arguments in their relationship, according to a survey of 2,094 adult Australians commissioned by Westpac.

Some arguments may begin due to discomfort because 89 per cent of Australians said they felt awkward discussing the topic.

"While talking about money isn't the most romantic topic of conversation, as our relationship has grown, so too have our discussions around our spending habits and financial goals," Ms Ellis said.

"Being on the same page when it comes to our finances has become increasingly important."

Most Aussies agreed that having the ability to discuss money with a partner made the relationship stronger but only one in five said they broached the topic.

The research found that 45 per cent of people would rather reveal their tally of lovers to a partner rather than ask someone who drank more at a group outing to pick up their share of the drinks tab.

Talking about money could be unsafe in some relationships. If you are in immediate danger, call 000.

1800 Respect has tools and tips to help prepare to have safe, respectful and secure conversations.