- Lauren Moraski | CBS News

Nick Lachey On '98 Degrees' (credit: Neilson Barnard/Getty Images)

Nick Lachey On ’98 Degrees’ (credit: Neilson Barnard/Getty Images)

(CBS NEWS) – Nick Lachey: Member of 98 Degrees, host of “The Sing-Off,” a new father and a singer of tweets?

READ MORE: Unique Twist To Pandemic Shutdown Of Long-Establish Santa Clara Restaurant

The last part of that sentence may have some people scratching their heads, but Lachey was in Manhattan on Monday singing a love song to a pretzel — to the tune of tweets and Facebook posts. He helped launch Wendy’s new menu item: a pretzel bacon cheeseburger. Apparently, the response to Wendy’s new concoction was so positive, people started referring to it as a “love-fest,” Lachey said.

“I actually took some tweets and social posts and turned them into an original song,” said Lachey, who sang followers’ tweets about the burger on Monday — a love song, if you will. So, does he like the burger? “I’m a big pretzel guy, so I’m a little biased,” said Lachey. Throughout the summer, the fast-food chain will post videos of Lachey’s performances.

But this summer, Lachey, 39, will spend most of his time putting his efforts toward a different type of performance; since May, he’s been out with the reunited 98 Degrees on “The Package Tour,” which also features New Kids on the Block and Boyz II Men. They’re second performance in the South Bay will be this Friday, July 12 at the HP Pavilion in San Jose.

READ MORE: Man Found Dead In Bullet-Riddled Vehicle In Union City

“It’s been a crazy, crazy year — all in the best possible ways,” said Lachey, who added that going “out there in front of 19,000 screaming women every night” has been “a lot of fun.” He said, “I have an enormous amount of respect for those two legendary groups. It’s an honor for our group to be on the stage with them.”

Although the boy groups have a lot going on while on the road, they still manage to squeeze in some time to actually hang out. “Everyone gets along. We went out bowling last week in Milwaukee on our off day. We do all get along really, really well, which is a positive. It’s not always like that,” said Lachey.

And this marks 98 Degrees’ first major tour since taking a hiatus in 2002. To coincide with the outing, 98 Degrees released the new album, “2.0,” this past spring, featuring songs written by Bruno Mars and Ne-Yo, as well as from 98 Degrees members themselves.

What happens next is unclear.

Read more at CBSNews.com

MORE NEWS: SF Restaurant Apologizes for Denying Service to Armed, On-Duty Police Officers

(Copyright 2013 by CBS San Francisco. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)