@MandyLou I just read your story and wanted you to know you are not alone! Our stories have A LOT of similarities and thought i would share.
I met my guy about 3 months ago. Same as you, i was the more reserved one. He was super open and vunerable with me. He told me that he wanted me to open up and that if he was vunerable, he felt it would help me open up. He definitely chased me. Texted/called everyday all day. Romantic dates, and even said he wanted to "wait" a few months before we got physical because he really wanted us to get to know each other. He is actually a reformed "bad boy". So he wasn't like this with everyone. So i definitely felt special. We had a great connection.
Cut to 3 weeks ago. He started acting a bit agitated. Then tells me he has decided to stop taking his anti-depressant. (paxil) He didn't like how he was feeling on them. Literally two days later, i got the distance and the pull away. I had no idea at the time that it was his PTSD, so i definitely thought it was me. I asked a few times and he said no. The main reason i wanted to share this story with you, is that your situation could be worse. Long story short, my guy ended up blocking me. Can't call him, can't text him. Can't facebook him. He blocked me on Fb. Can't instagram him. He blocked me. He even blocked me on Linkedin. He literally cut me out of his life. No reason.
I did have one conversation with him after calling him from my parents line. He said he was emotionally numb, and that i shouldn't wait for him. I asked if he still cared about me and he said he didn't even care about himself, so his answer had to be no. Since that conversation, he has posted pictures (found through a friend of mine since i was blocked) of him defintely moving on with other girls. He looks fine. Again, this ALL happened out of nowhere. We had conversations about us being together and he said he was sure i was who he wanted. He literally said that the day before he stopped his meds.
He is now gone, and i'm sure I won't hear from him. He is definitely moving on.
Anyways, it sounds like your guy really cares about you and still wants to see you. I think you definitely have some light at the end of your tunnel. And if it ends up not working out with you two, it sounds like he will at least handle it with more care then my guy did.
I am trying to move on, but i literally miss him every day. We weren't together long, but we were really on the road to something special and it's gone.
GOOD LUCK and i wish you the best!!