Hi. I'm new here, I've been reading the posts for a few weeks now, but this is my very first post. When you say he learned his lesson back with Buffy in Season 2, then why did he sleep with Darla? How did he not turn back into Angelus after he did sleep with Darla? Anybody know? Is it an emotional thing? Like, Angel and Buffy loved each other and after they had sex he turned?