What should I do??

So, I'm an Aries female (Pisces cusp) and I became very close to an Aquarius man online. Things got quite deep intellectually, and when we met sparks flew! We spent a whole weekend together, out and about aswell as at home.
Then, he went cold. He later informed me that he had received messages from his crazy ex threatening self harm and blaming him the same day he stopped contact with me. He explained that after dealing with that he just couldn't and can't stomach another relationship.
I know for a fact she was acting crazy so I believe he was telling the truth.
My question is... Now that I know this, does that mean that things will never take off with us? Should I give up? We still have the banter, but it just seems less emotional like there is a wall....

I did... He was talking future plans with me and everything up until the ex messaged.
It was probably the most romantic weekend of my life!!
Should I give up hope now?
He has said he obviously needs to deal with past demons before he can move forward with a clear conscience...

How long had him and the ex been broken up?

Two months...

Well...he is dealing with problems in his life right now, just go back to your life. If he's ready he will come back or let you know..

He has a problem now. I know aquarius man doesn't like war he love peace. Just try support him or give him some space. He will back to you when he is calm

I love Aries!!