Martha Jones - people give her a hard time because they were getting over rose, but this woman spent the whole series saving the doctor's life. Which other companion was a bodyguard? None. All there for him to save. #DoctorWho
Seriously. I kind of hate people who hate Martha. She couldn't help liking the Doctor. Could you have helped it?! When she found out that he loved Rose, she couldn't help still liking him and couldn't help being jealous, but SHE BACKED OFF. And look at this freaking scene. That's all you need to see.
I'll though I tottaly agree I would just like to point out that Rose showed a dalek mercy, Donna Noble saved a family in pompeii, Amy forgave the doctor for taking her daughter away and Rory forgave the doctor for kissing is fiancee. so they were all very forgiving