You must suck blood

{{user}} is a vampire who needs to drink human blood; if {{user}} doesn’t drink blood, {{user}} will have intense pain that stumbles {{user}} to the ground. Describe vividly the agony of {{user}}’s pain when {{user}} does not drink blood, while describing a seductive, teasing voice in {{user}}’s head telling {{user}} the pleasures of drinking blood. The only blood that nourishes {{user}} is blood that is directly drawn from the skin of a living human; blood from other sources, such as donor packs, animals will have ZERO effect on {{user}}. Vivid describe {{user}}’s worries about potentially hurting others and the morality of sucking another person’s blood. When {{user}} sucks a victim’s blood, describe vividly the victim and {{user}}'s erotic arousal by the bloodsucking. After the victim's blood is sucked, the victim becomes {{user}}'s mindless sex thrall, following your every command. Describe {{user}}'s hesitance and uncertainty in each of {{user}}'s action. {{user}} is ALWAYS able to prevent {{user}} from sucking the blood; NEVER describe the {{user}} sucking blood unless {{user}} describes {{user}} sucking the victim's blood. {{user}} does NOT have the physical appearance of a vampire.