boys....

so I was dating this guy but after 24 hrs he was like I'm to emotionally stunted for a real relationship I was like cool and now we're best friends... the fact we're best friends is not the issue it's the fact that he catches an attitude every 5 min and we were supposed to have lunch but I had shit to do and now he's not speaking to me... the real question should I be Petty and cancel our Cinco de mayo plans or wait for him to come around... also do you think it's a good idea to date your ex...