Men and women who cheat on their partners often feel a sense of remorse or guilt once the deed is done.

But two married men from Australia who shamelessly seek out affairs with other women have revealed how they get away with it and why they have no plans to stop.

Frank*, a 42-year-old businessman from Sydney, has been married for 20 years and started cheating on his wife eight years into their marriage.

'My partner had changed massively in her personality and she became very aggressive towards me,' Frank told Daily Mail Australia.

Frank, a 42-year-old businessman from Sydney, has been married for 20 years and started cheating on his wife eight years into their marriage (stock image)

'I stayed for the kids.'

Frank cheats on his wife at least once a week and typically meets up with his mistress during the day.

We once got a little carried away in a park as we thought no one was about.

'The person I am seeing runs her own business and it is easier for her to arrange her day if we plan when and where ahead of time. We also have rules regarding when we can talk and how,' he said.

Frank said the hardest part about organising their secret meetings is picking a place away from prying eyes.

'It isn't always easy so you tend to have sex in many places including parks, hotels, and each other's homes,' he said.

'It isn't always easy so you tend to have sex in many places including parks, hotels, and each other's homes,' he said (stock image)

'We once got a little carried away in a park as we thought no one was about - it was a quiet day and we had found a quiet corner.

'But we finished and turned around to see a couple quite happily watching us.'

Frank said he does feel guilty about cheating but the guilt never lasts long.

'I do feel it but then I go home and something happens again and I am soon reminded why I am doing this,' he said, adding that he won't ever stop being unfaithful.

'The woman I am seeing is very similar to me. She is married also, she is very down to earth and she is a mother and business person. She is on the same page as me and we are enjoying the connection.'

Frank said that if he ever found out his wife was cheating, he wouldn't mind.

Why do men and women cheat? * The most common reason for infidelity cited by women is emotional satisfaction, while men cite sexual satisfaction * Affluent women are 8 per cent more likely to be unfaithful to their husbands than middle class wives, while the prevalence of infidelity for poor and rich men is equal * People who are unfaithful in one relationship are three times more likely to be unfaithful in their next relationship, compared to those who have not been unfaithful in the first one Source: Relationships Australia Advertisement

'The way I look at it is that I can't be hypocritical. If she was though it would be better if she was discrete and played it safe,' he said.

Mike*, 36, from Melbourne, has been married for 10 years and met his mistress on affair dating website, Ashley Madison.

'I was first unfaithful 12 months ago. Situations change in relationships and people's urges also change due to their health and work. It was more about the physical side (sexual) than anything,' he told Daily Mail Australia.

Mike meets up with his mistress, a married 42-year-old woman from Melbourne, every few weeks and describes their meetings as 'an outlet from everyday life'.

Despite being a father and 'happily' married, he doesn't feel guilty.

'It's all down to values and your psyche. Sometimes you need to be a little selfish for the greater scheme,' he said, adding that he is likely to continue cheating for the duration of his marriage.

'We [myself and my mistress] are just normal people supplementing a side of our lives that is lacking.'

*Names changed