The blouse incident and the break up seem to have triggered the same emotions (hesitancy). Maybe the two events were connected in the dream, where your relationship took the shape of the blouse. I think it just means you are confused about what your boyfriend meant to you and that you're not really convinced by the reasons why you broke up. And even if you have a slight desire to get back together, you know it's not the right thing to do.

There's my take on it.