I'm in a very similar situation OP, except I'm the girl. I broke up with my boyfriend a few days ago and he took it fine, and said he wants to be friends etc. Now I see him everyday (unavoidable, we do the same course) and he is talking to me fairly normally and acting totally unbothered, but I just miss him being close to me so much. It's weird how I ended it but I'm the one sitting in my room upset and he's had absolutely no reaction. OP, I think maybe your ex just needs a bit more time. As long as you made clear you really want to be friends and you actually mean it and aren't just saying it as a standard break up phrease, then you just have to wait for her to come back when she's ready. Maybe just ask her if she wants to do something with you tomorrow, because you miss having her as a friend. Emphasise the friend bit so she doesn't misread it. Good luck.