The boyband recently reunited on the Today show to promote a one-off appearance at the Summer Mixtape Festival in Hershey, PA.
"It's been 11 years since we've been on stage together. To get back out there and have fans still singing along, cheering. It was a dream come true," band member Drew Lachey told MTV News after the performance.
Nick Lachey echoed his brother and fellow singer's enthusiasm, adding: "We've always forgotten our own lyrics. That's something we did even when we toured for two and a half years straight.
"I think we all had a little rust to kick off, but it's also funny how quickly it all came back. It is really like riding a bike once you start doing it, you're like 'Oh, I remember this now'. It's kind of like in your body still and it was fun."
Drew went on to tease that 98 Degrees may have new music out by 2013, explaining: "We're definitely going to get back into the studio and make some new music.
"The next couple of months are kind of busy for us on different levels, but we are going to get in the studio and start making new music and see where the creative process takes us and then we will see what 2013 holds in store for us.
"We are listening to songs, writing songs, so hopefully in the next couple of months. Nick has this one little thing he has to take care of, but once he gets that out of the way..."
Drew Lachey will appear on the upcoming season of Dancing with the Stars: All Stars, while Nick is currently expecting his first child with wife Vanessa Lachey.
Watch 98 Degrees' video for 'Give Me Just One Night (Una Noche)' below: