heartbroken

So I was talking to this guy for a few months and we really hit it off and got along really well. But then two days ago I found out he wasn't over his ex but we talked about it and said we would still give us a try. Fast forward to today when he texts me out of the blue saying he needs some time alone. I get it but I'm sad because I really thought we were gonna have something special but he called it off out of nowhere. :( i guess I'm just asking for any advice on not feeling so sad