Singer Carly Rae Jepsen attends 2012 Arthur Ashe Kids' Day at the USTA Billie Jean King National Tennis Center on August 25, 2012 in New York City. Credit: Gary Gershoff/

Dude drama!

Back in May, Carly Rae Jepsen was head over heels for the man who inspired her hit, "Call Me Maybe."

"He's an amazing guy," Jepsen, 26, gushed to Us Weekly about her boyfriend of one year, Jordi Ashworth, an architecture student. "Jordi is studying to become an architect, but right now he's taking some time out to come along and be involved in this adventure with me. It's nice that I don't get lonely," the singer previously explained Sunday World. "He blushes when he hears the song ("Call Me Maybe"), but I write a song a week, so he has a couple of CDs worth of songs dedicated to him."

But on Aug. 18, it was musician Matthew Koma proudly watching from backstage as the pop singer performed at the Summer MixTape Festival in Hershey, Pennsylvania. 

What happened to Ashworth? "Carly broke up with Jordi in June because her schedule got crazy," says a source. Jepsen's career exploded after Justin Bieber, 18, shared a music video of himself with pals Selena Gomez and Ashley Tisdale dancing to her song in February of this year.

Soon after, Redfoo from LMFAO introduced Jepsen to her new guy. Adds the source, "She really like him!"

Earlier this month, Jepsen joked with Us about setting her romantic sights on a much-beloved a-list hunk. "Ryan Gosling can call me anyways!"