From 2013 to 2015, I had an on-off relationship. He was a victim of child abuse and had PTSD which led to various trust and commitment issues. Up until this summer, we still kept in contact and remained in a limbo of not single but not together. He is a wonderful person but a horrible boyfriend, so I let him go back in July. Since then, I've received multiple texts from him, but not anything substantial. Most recently, he messaged me a week ago saying he was feeling sentimental and wanted to thank me for being the one person who stood by him etc etc. it's all stuff I've heard from him before and I used to take him back afterward. Now I know that unless I stay gone, there's no chance he'll change.

Can someone please advise me on how to make him stop communicating with me? I've already bluntly clarified my lack of interest back in August and I haven't answered his texts since but I still receive them. Otherwise even someone providing the motivation for me to keep up what I'm doing would help. I feel extremely guilty even if the ending to our relationship and our current problems were a result of his actions. I want nothing more than to go back and help him as I always have but I know it won't be good for me. Luckily I have since moved away so it's just slightly easier since I won't see him around.