"I could save the world but lose you." I think a lot of people forget about this quote. It is the first time it is clear the Doctor is falling in love with Rose. And you so clearly see her strength when she just turns to him and says "Do it.
This is the best personality test I have ever taken. It has a unique approach that is way more fun than others, and it is astonishingly accurate! You should definitely take a couple minutes to check it out