This sounds like quite the emotional roller coaster - weeks of silence, then loads of communication, then nothing. I'm sure he was happy to hear from you, relieved you still care, missing you after probably suffering himself for not having been able to give you the relationship you need. And the operative word here is "need." You have needs too, and a desire for a mutually respectful, balanced relationship - whether it is romantic at the moment, or not. I'm a supporter and can only sort of glimpse at how atrocious PTSD is for sufferers. However, it's important for us supporters to hold on to our own values and boundaries - what is and what isn't okay with us, along with how we need to be treated to keep people in our life. It's a hard line to toe because sufferers truly have times where their capacity is limited, but it's up to us to weed out what we can make allowances for and what just won't fly. Unless he is in very direct crisis mode at the moment and can't even look at his phone - I don't think PTSD is an excuse to flake and just let you hang. That's just shoddy and rude, and I'm sorry you have to sit around right now wondering what is going on...I'm sure you've had enough times like these when you were still together :(