He came back after 2 1/2 months

Sara
I'm just looking for some insight and opinions I guess.
-together 6 years
-engaged 2 years
-we were 3 weeks away from buying a home together
-he ended things (beginning of May) because of an abortion he knew about 5 years ago. He never dealt with it back then.
-joined tinder 2 weeks after we split
-he never hung out with anyone, just texted 
-July 14th he texted me something random then the next day he asked to see our dog. He then admitted he missed me and wants to work on things. 
So now we are currently working on things. I feel like he didn't realize what he had until it was gone. Do you think that is the case?