Kesha's concert Wednesday night near Detroit proved to be a particularly engaging affair for two of her front-row fans.

Shortly after dueting with tourmate Macklemore on their new single, "Good Old Days," Kesha pulled couple, Holly and Amanda, up from the crowd at the suburban DTE Energy Music Theatre. Holly then dropped to one knee, asking Amanda to marry her and placing a ring on her right hand as Kesha beamed and the crowd of about 13,000 roared in approval. The couple kissed each other and then each hugged Kesha, who claimed that "I did not know that was going to happen." She then sent them backstage with instructions to "go make out and have the best time ever."

After the couple left the stage, Kesha gushed that, "I'm so f***ing happy that this is a place people can come and be happy and do things like that. Love is f***ing everything!"

The Kesha-Macklemore tour next plays Thursday night in Indianapolis and runs through Aug. 5 in Tampa, Fla.