Ben Rogers and Mark Poidevin oppose same-sex marriage and feel their views are immediately dismissed as homophobic.

The couple met 15 years ago on a website called Gay.com. They say it was love at first sight.

"We've been through our ups and downs like anyone else, but I love him dearly and there's no-one else I'd like to spend my life with than him," Mark said.

While the Wollongong couple have committed to each other for life, their views on same-sex marriage are not what you might expect.

"I used to be a supporter of same-sex marriage. I mean, I proposed to Ben five years ago," Mark told 7.30.

"At the time Ben said it wasn't for him, that he didn't believe in it, and I said, 'When the laws change, would you like to?'"

When Ben refused Mark, he told him he had never thought same-sex couples should get married.

"I just explained to him, 'I don't think it's my cup of tea,'" Ben said.

"It's not something I had ever envisioned."

Ben said while he respects that other couples might want to wed, he is committed to preserving traditional marriage.

"There's never been any discrimination with any of our families, or dramas coming our way because of our sexuality," he said.

"When I first came out I think one of the consequences was giving up marriage and children and things like that."

Concerned about 'where it would lead'

Mark, a committed Catholic, has changed his stance on same-sex marriage since he proposed to Ben five years ago.

"If we make one exception for one community, that being the same-sex couples, where does it stop?" Mark said.

"Do we then see other cultures being allowed to have multiple marriages? Do we see the age of consent being lowered for another group of minorities? That is my concern, of where it would lead."

Both are happy to express their views, but say their honesty has come at a cost.

"The campaign's gotten nasty on both sides and I think the comments that I hear are, 'You're a homophobe if you don't support gay marriage,'" Mark said.

"I'm a gay person here that's coming out and saying, 'well, no it's not. It's your right to have a view, your right to have a view either way and people should be respected'.

"You're not intolerant if you don't support a view."

'Could be Brexit or Trump moment for Australia'

Mark believes there are many people who will vote no but are too scared to express their opinions publicly.

"This could be the Brexit or Trump moment for Australia, where the polls are saying one thing but you go to the ballot box and people are clearly in another mind, going to vote another way," he said.

This week the High Court will hear two challenges from the Yes campaign against the Government's $122 million postal survey.

Even if the survey proceeds, Ben vows he and Mark will not be walking down the aisle.

"If it's yes, we'll be like, 'Congratulations, everyone can get married,'" he said.

"But we personally will not be getting married.

"We stand by our commitment to each other, we don't need marriage in our lives, definitely not."