THIS is a love story. It began on a hot summer night in Santa Barbara, Calif., when Tamara Langman helped kill the yellow-eyed demon known as Prince Malchezaar. She was logged into World of Warcraft, the multiplayer fantasy game, and her avatar — Arixi Fizzlebolt, a busty gnome with three blond pigtails — had also managed to pique the interest of John Bentley, a k a Weulfgar McDoal.

A note to the uninitiated: World of Warcraft is a vast online game where monsters are meant to be vanquished, but it is also a social networking experience. When players aren’t battling monsters, their avatars are exploring fantastical landscapes (lush jungles, snowy forests, misty beaches), where they can meet and gab via the game’s instant message feature, or through voice communication software.

And so Ms. Langman and Mr. Bentley found a quiet spot for their avatars to sit. Hours evaporated as they discussed everything from their families to their futures. Sometime before dawn, Ms. Langman realized that while she was in the fictional world of Azeroth, she was also on a date.

For the next two months, Ms. Langman, 27, and Mr. Bentley, 24, rendezvoused in Azeroth, until one day they decided to meet in Santa Barbara instead. When Mr. Bentley stepped onto the tarmac at the Santa Barbara airport on a bright October afternoon in 2008, Ms. Langman ran to him. Mr. Bentley scooped her up into his arms and spun her around.