The Doctor and Yasmin in “Legend of the Sea Devils”

Yaz... I can't fix myself to anything, anywhere or anyone. I've never been able to. That's what my life is.

Yeah, of course.

Not because I don't want to... because I might. But if I do fix myself to somebody... I know, sooner or later, it'll hurt.

My nani says courage is knowing something will hurt and doing it anyway. Mind you, she also said it's the definition of stupidity.