I think a lot of people did. You can get almost everyone.
ABSO-FUCKING-LUTELY!!! I just finally managed to snare 3 Sisters and My Mommy into a Relationship. The (W)itch now Loves me because I'm helping here ass kick the blackmailing customer idiot. So yes. Each 1 has a Key point in which to trigger a Relationship or you Fail until a fresh playthrough.