How do I get over this breakup and move on when I have no closure?

My live in boyfriend left me a month ago with no job, no money, overdue bills and I had to sell my home, gave my pets away and moved to an apartment because I needed money. I truly loved this man but found out a year in to the relationship he has an substance addiction. I lost everything of worth, he sold it. Losing everything and him has been very hard on me. I am angry and want to get the last word in and he will not allow me to do so. I need to get over this and move on but I don't know how. I just want to get even for all he has done to me and I don't want to dwell on him anymore.