I fear spiteful ex is secret stalker

IS my ex-boyfriend secretly watching me?

- 

Is he stalking and following me? I turn a corner and feel he's behind me, or I look out of the window and think I can see him hiding behind a tree.

I've sent him messages demanding he leave me alone, but he says I'm imagining things and going crazy. Maybe I am...

Back in January I finally decided to finish with him after three years of hell. I was sick of his moods, his affairs and his disrespect towards me.

He admitted he'd also been unhappy for a long time and agreed we'd be better off apart.

We promised to end as friends and I was so relieved.

Only now I'm not so sure he's gone away. I fear he suppressed his anger and is now furious with me for daring to reject him.