Narcissa's hair (HP&HBP spoilers)

[Richard Shepard]

> > Carol:
> > Anyway, it always seemed to me that Narcissa's beauty is one of the reasons that Snape took the Unbreakable Vow.
> 
> Joann:
> I've never imagined that Snape took the unbreakable vow for any reason other than to keep playing double agent. I don't think he would do something that drastic because he felt sorry for Narcissa. Snape turned out to not be all bad, but he was hardly a prince charming. He had a soft spot for one person, and one person only. Lily Potter.
>


Richard:

I do not think Snape was swayed by Narcissa's beauty, but he probably was affected by the love and fear of a mother for her only son.  He might even be afraid that Narcissa will do something foolish like get herself killed by Voldemort trying to protect Draco... just like a certain Mrs. Potter :)  

But all in all, the unbreakable vow was not much of a risk for Snape.  He probably would have tried to protect Draco anyway.  And he was already going to kill Dumbledore anyway as well.