Tangled:
It sounds like he treated you rotten and was an unhealthy person to be married to.
When you are tempted to get pulled back into his web via his manipulations and play on your worry, remind yourself that you deserve to be treated well, not rotten, and you deserve to be exposed to things that are healthy, not unhealthy. Think about how important your own health is and put that first; keep it foremost for now until you've had time to recover from it all. It may take awhile before your sympathy can no longer be played on and tempted like that. If he keeps texting you late at night like that when you might be trying to sleep, I'd think about blocking his texts. You don't need that kind of stuff being thrown at you. It's disturbing to say the least. This may sound hard-hearted, but you've got to put yourself first for a change and you will be better for it.