Some of his behavior is beginning to sound almost like Borderline Personality Disorder. I am not diagnosing him, I can't, it just is beginning to feel that way.
He becomes suicidal, when you offer unconditional support, he breaks up with you and tells you to move on, and you still offer unconditional support, then he does this:
After I said all that he said he's not running away, all is good and started asking for pics again. He used to always ask, almost everyday. Not just sexy ones. Regular ones too. My head is spinning. I have to go vote and run errands then I need wine.
BPD can develop in relation to trauma, especially complex trauma... but it's also it's own complicated mess to deal with at times. It's very hard to stay clear headed when in romantic relationships with people who are very symptomatic with borderline type symptoms - and it's often not a good idea for the person who is borderline and has strong symptoms (like sucidality) to be dating until their symptoms are in better control. It sounds like he is realizing he is treating you like crap, feels bad, then rejects you, then feels alone and pulls you back in, and then down and down you both go... It is beginning to feel like he is almost using you to feel better and ignore his symptoms and ignore diving deeper into his treatment. It might actually be in his best interest to not be dating anyone right now... Maybe I am very wrong. These are just some of my own thoughts that come from my experiences, both personally and professionally with people who did a lot of push/pull kinds of things, and some people who has full blown BPD.
Sometimes it is good to stay involved with someone with BPD - it does take much skill and boundaries to handle it in a healthy manner for both. And sometimes it is best for both parties to back up and take space for awhile as the suffer gets treatment for the underlying trauma for awhile. This is often true in cases where there is just PTSD and no BPD, or more mild symptoms of BPD.