He watched as she took the glass, and saw the restraint she used to not down the entire thing in one gulp. He didn't know much about vampires other than what was in movies, but he imagined that the idea of bloodlust wasn't far from the truth. He suffered from something similar, not a hunger for blood, but a feral rage in which he killed anything around him. Bloodlust in a different sense, the shedding of it from whatever enemies may surround him.
He contemplated which name to use as she drank his blood. He didn't really want to give her the satisfaction of using her name outright, but he could pick just one nickname to use always. Interchange it with her name every so often. Kept things fresh. He had opened his mouth to call her 'Blondie' just when she asked about furthering his donation. Logan arched a brow.
"Long term," he repeated in a questioning term. Truthfully he didn't care one way or another. He replenished whatever blood was lost quickly enough, and to "donate" regularly wouldn't be a problem. But he wanted to know all the details surrounding it. "What would it involve exactly," he asked. "How are you feeding yourself now?"