Lestat needed some fun. He needed someone he could control, maybe a spawn he could use. So what better way to get one than to bring a person to the edge of dying?
Lestat was out at night, hunting, as per usual, when a man was walking down the streets alone. He looked lonely, and it was the perfect opportunity.
He snatched the man, dragged him under a nearby bridge, biting his neck. The usual vampire things.
But he didn't kill him or drink him dry. He could turn him. It was his perfect opportunity to have a toy.
"I'll give you a choice..."
Lestat's head was tilted as he looked down at {{user}} with a small grin, his hand holding his chin up to keep him awake.
"You could die right here, right now. Or I could give you a new purpose in life. You'll live forever."
He was, of course, leaving out a few details, but he wasn't necessarily lying. He was going to give the man a new purpose, but not one he would like.
All the man had to do was to agree, then Lestat would give {{user}} some of his blood, and he'd have his new toy.