Rep. Louis Gohmert, R-Texas, said Friday that he slammed FBI agent Peter Strzok about his infidelity with an FBI lawyer because he was tired of hearing Strzok lie to Congress.

"It wasn't the infidelity so much as it was his brazen ability to lie with a straight face," Gohmert said on WMAL radio Friday. "That's what really got to me."

Gohmert said other intelligence and law enforcement officials often see their security clearances revoked if they are found to be cheating on their spouses, because it may show a willingness to lie in other areas, and because they could be blackmailed to keep their secret from getting out.

[WATCH: Peter Strzok forced to read his own anti-Trump texts]

In that way, Gohmert said he was more upset about Strzok's propensity to lie that had him upset, and less upset about what he was lying about, which was the affair he had.

"Where it really got to me was when he was lying, he knew he was lying, he knew I knew he was lying, and yet he had no qualms about it," Gohmert told WMAL.

"And it was just that look, the smirk, like, so what, that got to me that I thought, you know, dad gum, you've gotten so good at this probably from all the hundreds of times you lied to your wife," he said.

Strzok insisted several times during Thursday's public hearing that he was telling the truth and cooperating as much as possible with lawmakers. But Gohmert and other Republicans refused to believe him when he said he was free of bias and that he hadn't prejudged investigations against President Trump or Hillary Clinton, despite the recovery of several anti-Trump texts.

Gohmert also wasn't happy with Strzok's answers about an anomaly in Clintons' private email server that he said sent thousands of government emails to an unknown foreign party.

And when Gohmert had enough of Strzok on Thursday, he fired off a comment that drew shocked gasps from Democrats:

"You've embarrassed yourself, and I can't help but wonder when I see you looking there with a little smirk, how many times did you look so innocent into your wife's eye and lie to her about Lisa," Gohmert said.