Summary: "First rule, babe," Zayn says, leaning down. His lips slide over Liam's jaw, barely there, just a soft pressure, fleeting and gone as soon as it came. "Never trust a vampire." He's grinning as he climbs off Liam, heading for the door. Liam watches him go, thinking that he's wrong. The first rule should be to not fall in love with one. This is Ziam Vampire AU. And as always its not mine! its written by scottmcniceass in ao3