It's overcast, which means James doesn't have to be all "careful" while walking around outside, so he can in fact just walk around outside! It's nice to do that every now and then. And then there are a couple of packages he's expecting so he might enjoy this lovely unsunny day to visit the Post Office, why not.
"... You've put me in a really awkward position. Because if I believe you, and trust you, and turn out to be wrong, I am alone with a crazy person. If I don't believe you, and don't trust you, and turn out to be wrong, I just casually ripped your heart out and stomped it to pieces. Why didn't you open with this explanation instead of playing this stupid game and abusing the trust you'd already had?"
"Because I didn't notice I was in magical love with you," he—whines. It sounds weird in his voice. "I noticed just now, I just thought—that you were very attractive. I can give you more evidence here, more pebbles?"
"You—okay. More pebbles, sure, and I can walk to a relatively secluded place near an officer and if you turn out to be crazy I can scream."
This plan decided, she goes about enacting it. She collects more pebbles, and stalks off to find a police officer that she can be in a secluded spot within screaming distance of.
He follows her, keeping the distance. "I have extra-good reflexes, too," he says in a muted voice. "You can throw the pebbles at me and I will catch all of them."
"Do not want to attract too much attention," she informs him, in an undertone. "We are already interesting to look at, I'm collecting pebbles and we made a scene in front of a bunch of very mortified Englishmen."
She collects pebbles, too annoyed to be embarrassed about the weird looks she's getting, and then she locates a police officer and stalks into a relatively secluded place nearby, between a couple of buildings.
"Here," she says, holding out a handful of pebbles and bits of pavement and rocks of all kinds.
He accepts all of them and casually crushes them into fine powder in his hand. She might notice the coldness of his touch when his fingers brush her hand.
She'd noticed earlier when she'd kissed his cheek, but hadn't started connecting the dots until now.
"... Okay," she says, looking at the dust. "Other proof?"
He looks around—secluded—and jumps much higher than a regular human ought to be able to. Then he drops to one knee and presses one finger into the pavement, making a hole there. And then he runs one meter to the left faster than her eyes can follow.
Her breath catches and her heart rate speeds up and she stares.
She swallows.
"All right. I'll tentatively believe that you're telling the truth about the vampire thing. You did not mention the super speed."
"Apology accepted." She closes her eyes and takes several deep breaths. "Why is my brother not here if you talked to him, why did he not tell you not to lie to me? Why would he forget about sending letters at all? That doesn't seem like the sort of thing he'd ever forget."
"He doesn't have enough control to be around humans, not reliably, and not kill them. He does not want to kill you. And when we turn—the new senses are overwhelming, overwhelming enough to make us forget anything that's not very, very important from before. He remembered you, but not the letters."
"Great. Okay. How serious is your, your eternal unbreakable magic love with me, and if I ask you to leave, will you?"
She looks at him with alarm and concern.
"... Okay," she says, very faintly. "Okay. So I'm in a 'I am holding your heart and soul in my hands' kind of situation. Is what I'm hearing."
"If—if you ever turn into a vampire you will automatically have the same thing about me, as soon as you see me. But I would never do that without your consent!" he hastens to add.
"I had not—noticed before. I wouldn't have. But I also won't. It—it should be your choice."
"Yes it should, I am very glad we're in agreement on that front," she agrees, a bit quickly. "Um. What was your, your plan? From before you realized I was the target of your magic love thing."
"I wanted to meet you, to seduce you, to kiss you and have sex with you and then I would have had sex with the hottest woman on Earth and I would be able to stop thinking about you all the time."
"... I, am. Flattered and. A bit concerned." She considers. "More than a bit concerned. Okay. So. What is your plan now that you know that I am the target of your magic love thing?"
He shrugs slightly. "Do whatever you want me to do. Give you whatever information you want to have."
"O-okay," she says, very faintly. "Okay. I would like for us to find a secluded place to sit down because this seems like a sitting down conversation."