We haven't seen each other in a month
When you, said you, needed space, what
This means that he or she came back after he or she leave you. Okay, it depends on you if you will accept his/ her apology, but if I were you, I will not accept he or she anymore. Unless I'm stupid enough. Also, Long distance relationship can be one of the possibilities. That your relationship can be ruined. So. Don't cut off your communication. Wherever, whenever it takes!