02/21/2012 12:22 pm ET

Taylor Swift And Zac Efron On 'Ellen': Stars Sing Duet, Address Dating Rumors

With rumors of romance in the air, The Lorax co-stars Taylor Swift and Zac Efron sat down on The Ellen Show to clear the air -- and to sing a surprise duet! It turns out the the 22-year-old country star and 24-year-old actor are singing together, but that's about where it ends.

The duo performed a friendly duet together, and also discussed their Valentine's Day plans (which did not involve each other!). Although T-Swift may have starred in the Hollywood film Valentine's Day, IRL, the starlet's v-day was much less glamorous.

Taylor told Ellen, "I actually had a pathetic single girl's party -- it was cool! That's actually what it was called. I'm not saying being single is pathetic -- because we've talked about this, I think being single is awesome -- but I had all my single girlfriends over and we ate junk food... and danced and made these little profile cards about why we were single."

Zac, on the other hand, laughed about how different that was from what guys do on Valentine's. He said: "I went to a screening of a film that I did called Liberal Arts. Then cooked some dinner."

Do you think Taylor and Zac would be a cute couple? Tell us in the comments below or tweet @HuffPostTeen!