If there is any consolation for friends and family, it is that he died on his bike, his most prized possession.

From the time he was 2 years old, Mr. Griffin was always interested in bikes, including dirt bikes and four-wheelers.

"He was doing what he loved to do," said his mother, Lisa Bossone of Severna Park.

His girlfriend, Lauren Dyer, recalled the day they bought the motorcycle, a Honda CBR 1000. It was a limited edition, and they had saved up to buy it, she said.

"I'll never forget that day," Ms. Dyer said. "He was the happiest kid ever."

He loved the bike so much he wouldn't leave it outside, she said. Mr. Griffin kept the motorcycle inside his apartment and was always cleaning it.

"It was like his baby. He loved it," she said.

Ms. Bossone said her son was a fun-loving kid who always cared for others.

"He would give anybody the shirt off his back," she said. "He would do anything for you."

Mr. Griffin loved life and was always on the go, she said. He attended Severna Park High School before earning his GED. At the time of his death, he was working as an apprentice for Mona Electric in Washington, D.C.

His funeral was attended by more than 200 people, and while he was hospitalized, friends lined up to see him, Ms. Bossone said.

"It tells you what kind of guy he was," she said.

He and Ms. Dyer had been dating for about a year and recently moved in together in an apartment in Quiet Waters Reserve in Annapolis.

"He was shy at first, but when you got to know him, he was funny," she said. "He really cared about people."

But his motorcycle, "that was like, his thing," she said.

At just after 2 p.m. May 5, firefighters were called to the scene of the four-vehicle accident near College Parkway and Ritchie Highway.

According to police reports, Mr. Griffin was driving his motorcycle south on Ritchie Highway when he moved to the right, hitting a Toyota Yaris. He then moved left, hitting a Ford Escape. The Ford Escape knocked him off his bike and he went under an SUV, where he was trapped.

On the night of his death, Mr. Griffin saved two other people's lives by donating his organs, his mother said.

"That was his choice," Ms. Bossone said, adding that he had decided to be an organ donor.

Ms. Dyer knew he was an organ donor, and his decision to be one didn't come as a surprise.

"He was like, 'Why not?' If he could save someone else, he would," she said. "He didn't think twice."

He was also a regular at Acme Bar and Grill in Annapolis, where people knew him by name.

Ms. Dyer said her boyfriend's death still seems "surreal." She remembers him as a genuine person.

"You don't meet a lot of people like him," she said, her voice breaking with emotion. "He was a really great person. He changed my life completely."