[Barry] He'd been slipping out for a while to see someone, and it turned into the sleeping over kind of seeing them. Like slinking in with bedhead and really not wanting to talk to me about it when I asked. Politely not wanting to tell me. I figured it was just boundary setting but it probably wasn't.
I don't know why he'd bother making it look like an accident, but I know why he'd bother leading Hartley on for weeks then killing him. That's pretty much what he does, one way or another.