Jonas Brothers Help Little Girl's Dream Come True

Jonas Brothers Help Little Girl's Dream Come True
Jonas Brothers at the Texas home of cancer patient Jayla Cooper, in her father's arms

03/03/2009 AT 09:45 AM EST

The Jonas Brothers surprised a very special fan of theirs in her Grapevine, Texas, home on Sunday, when Kevin, Nick, and Joe popped in to see Jayla Cooper, a 9-year-old girl battling an aggressive form of leukemia.

Resting in her father Jerrod Cooper's arms when the trio entered her house, Jayla gasped and then later received a hug from her favorite musicians, whose visit was arranged by – and shown on Tuesday's – CBS The Early Show.

The Jonases also sang an a-capella version of her favorite song, "Love Bug," and told Jayla they love her.

Last month, Jayla witnessed another dream come true when she symbolically married her 7-year-old boyfriend, Jose Griggs, who is also fighting leukemia, though a less aggressive form. The two met at the Children's Medical Hospital in Dallas.

"He's funny, and cute, and very sweet," Jayla said of Jose. "And I love him."

Their "wedding" party – where the formally dressed young couple danced to "Love Bug" – was Jayla's greatest wish, said her mother, Lisa Cooper, who also hopes one day to see her daughter dance at her real wedding.

"I believe there's a miracle out there," says Lisa Cooper.

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