<human>: Can you condense the text into three sentences or less?

I [33F] am now engaged to the love of my life who I've been with for over 7 years. I have no feelings for my ex [37M]. It's been 10 years since we broke up.  We dated for 3 years. He was a controlling and manipulative narcissist and our relationship was very unhealthy. 

We kept in contact as friends for a while after the break up (I moved to another country and still live there) but I cut off communication with him about 4 years ago when things became too volitile.  He kept trying to get me back and got angry when I didn't reciprocate his feelings. I also found out that after we broke up he married but divorced after only a year.  

He recently messaged me to tell me that his cancer has returned but he doesn't have the will to go through another round of treatment and is trying to 'reconcile with people he has hurt in his past'.  

I responded with a short message and told him not to dwell on the past and to spend his time with his family and friends and to be at peace. I asked him not to contact me again. He did not respect my request and has asked me to explain why I hate him so much. 

I don't hate him. In fact I feel sorry for him. He is alone and only has himself to blame for any regrets he may have. I am angry that he is making me feel guilty for not responding to what seems like his dying wish.  I think he wants me to inspire him to fight his cancer but I don't want that responsibility and I don't think that's fair. I have moved on and want to cut him completely from my life. What should I do?
<bot>: My ex is dying of cancer and has refused further treatment. He is trying to guilt trip me into communicating with him again and I think he wants me to inspire him to fight his cancer. What should I do?