Poor nami, she doesn't deserve what's coming.

Nami probably thought Don will love her after some years, so it's her fault too. Let's not forget she came up with this stupid idea

(sorry for my terrible english)

Hmm maybe she is a masochist? Don doesn't seem like the type to lie and say he loves her even after 10 years. That is a big hint. They have only been sex friends all this time imho. Maybe we'll see where her head is next chapter.