they definitely hinted a crush there, but possibly because of how Ecleston was playing the Doctor, it personaly didn't bother me as much as it did with Tennant.
also - same on Donna. when she first showed up, I really didn't like her, but she grew on me to the point where she is tied for a fave with Martha for me.
P.S. I did like Bad Wolf as well, honestly, I wish we could see Donna and Martha with Nine... it would have been amazing IMO.