Former Republican presidential candidate Newt Gingrich said Mitt Romney "said things that weren't true," over the course of the campaign.
Shown a new ad from the Obama campaign during an interview with CNN's Wolf Blitzer Thursday - a clip reel of Gingrich's slams on Romney during the primary season - Gingrich laughed and said, "You have a rough-and-tumble primary season and you'll get words like that."
He was asked if he still believes Romney is a liar.
"I still believe the Romney campaign said things that weren't true," Gingrich said. "I also believe that compared to Barack Obama, I would trust Mitt Romney 100 times over."
Gingrich did not officially endorse Romney at the announcement he was suspending his campaign on Wednesday. He said he would do so in a couple of weeks, though the two had "not set a specific date."
Gingrich said the public would "absolutely" see him on the trail with Romney.
As for Gingrich's debt, he said he would conduct a lot of meetings, "begging people to help."
Gingrich also weighed in on the nomination for vice president, saying he thought Sen. Marco Rubio, R-Fla., was ready to be president and "very knowledgeable."
Gingrich also mentioned Louisiana Gov. Bobby Jindal, former Secretary of State Condoleezza Rice, New Mexico Gov. Susanna Martinez and Indiana Gov. Mitch Daniels as people Romney should consider.
"I like [Sen.] Rob Portman a lot," Gingrich added. "We have a really deep bench now of a whole new generation of people who are very confident."
Gingrich said that looking back on his campaign, the more "visionary" he was, the better he was doing in the polls.
"The more I got sucked into daily politics, the weaker we were," Gingrich said.