GOP presidential candidate Mitt Romney had an interesting exchange with a gay veteran at a New Hampshire diner Monday morning.

According to The Boston Globe, 63-year-old Vietnam vet Bob Garon asked the former Massachusetts if he would support a repeal of the state allowing same sex marriage.

"I believe marriage is between a man and a woman," Romney replied. "That’s my view.”

Garon was upset by Romney's answer, explaining to the GOP candidate the troubles married gay veterans face.

"If two men get married, apparently a veteran’s spouse would not be entitled to any burial benefits or medical benefits or anything that the serviceman has devoted his time and effort to his country," he told Romney. "And you just don’t support equality in terms of same-sex marriage?"

After Romney said "we apparently disagree," Garon further showed his displeasure.

"It’s good to know how you feel," he said. "That you do not believe that everyone is entitled to their constitutional rights.”

Romney instantly replied back to Garon's opinion.

"No, actually, I think at the time the Constitution was written it was pretty clear that marriage is between a man and a woman," he said. "And I don’t believe the Supreme Court has changed that.”

What has changed however is Romney's position on another issue. While running for the Senate in 1994, he told a gay newspaper that same sex marriage was a "state issue as you know – the authorization of marriage on a same-sex basis falls under state jurisdiction.”

Garon told The Boston Globe afterwards that Romney's chances at winning were doomed.

“The guy ain’t going to make it,” he said of Romney. “He is not going to make it. You can’t trust him. I just saw it in his eyes. I judge a man by his eyes.”

WATCH: Video from Politico, which was published on December 12, 2011.