Idk if this is happening to anyone else but it seems that Bob and Bianca are becoming somewhat of a pairing in my game.
I got proof too --> http://sta.sh/0xvf5bfeu0i (note: the thing Bianca forgot at Bob's place was a shirt... :I)
ALSO, I did end up resetting that file and in my new town Bob was around. Then the very first new villager to move in was Bianca. :I ...Yeah, I ship them.