Less than two weeks after being thrown from his pickup after a late-night bachelor party, Jamie Lynn Spears’ boyfriend, Casey Aldridge, stood as best man at his cousin’s weekend wedding in Mississippi, a source tells People.

“He had the weakness of having been in bed and still trying to get his feet under him,” the source says. “It was outside, it was hot, but he did okay. It’s just going to take him a few weeks to get better.”

Another source says Aldridge was limping and walking slowly. “He was not very animated,” the source said. “He is usually quite lively, but he seemed lethargic.”

Aldridge, 20, flipped his truck on April 26, causing him and two of his four passengers to be thrown from the vehicle. He suffered head trauma but no apparent brain injury.

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