"So! What now?" asks Matt. "Are we just going to sit here vampsitting you while you keep learning French-or-whatever, or…?"

Shrug.

"...I thought we'd decided to go to the river?"

"Right but other than that, because that takes what, like twenty minutes?"

"And I have superspeed, so, probably less."

"… I mean, maybe, but we also have the parasol thing and the fact that we're going to try to be careful with you around people and there are also two of us that need to get there with you."

"After that maybe we could test whether he can drink blood without forgetting we're people and stuff."

"I guess by then we might have thought of more things anyway, yeah."

"So if we're going to the river, am I just taking one of you or am I expected to come back for the other alone, or are we walking there the slow way and risking me being spotted and also sunburnt…? Because I probably opt for the 'just taking one of you' option."

"Sounds reasonable. Matt might wanna take a nap?"

"Yeah, that sounds good," he agrees. "Uh, see you shortly? Shout if you need my help?"

Nod.

"Seeya."

So Theo gets a small parasol from upstairs, doesn't take him very long, and then they go out to the backyard and Theo will pick Sadde up – it's slightly awkward with the parasol but is doable – and river-wards they go.

And Theo can cross the river unproblematically.

And afterwards he goes back into the shade of the nearby trees and says, "So running water is apparently not a problem."

"Apparently not. I wonder just how you became a vampire, and why these weaknesses and not others..."

"I still have no idea, but I don't have any better memory of what I did as a human than I did as a human, so maybe I've forgotten some innocuous-seeming detail. Unless someone put blood into my water supply and then somehow managed to kill me, or bit me and made me forget, I have no idea. We don't even know what the turning process is, yet, except for me it involved dropping dead of seemingly no cause."

"Hmm, making you forget, actually, I think some vampires can do that? In fiction, that is."

"I mean, we could see if getting me sway over someone lets me make them forget stuff, but I don't think it does? From how it works so far, at least, it doesn't seem to do proper blocks, it's just– accidentally not thinking before you do a thing." Pause. "Unless there's some other mechanic, like staring deep into someone's eyes or whatever."

"Wanna try doing that to me?"

"Sure!" he says. "Might be a bit awkward, not sure how you typically are with deep, soulful staring or whatever."

"I already do kinda have a crush on you, don't think it'll change much."

Blink. "Okay," he says.

And presumably she is over in the shade, not in the sun, so he doesn't have to be burning while he tries this…?

Yep.