Saying 'No'

So, if you want to totally understand what I'm talking about, I suggest you read this... HERE, but only if you want to.

So my ex-boyfriend tried to add me on facebook this week. Then earlier this evening he tried talking to me. He said he really wanted to hang out, despite the late time. He kept asking to see me, and to get back together. I didn't want to, and I tried to tell him, but didn't know how to. In the end he was very upset... He's not used to hearing 'no' from me, ever.

If you could, I'd love a comment... Have you ever experienced this? Was it good to say no? Should I have given him a chance?

Sorry it's so short...