What can I do to fix this broken relationship?

This building a new friendship line is possibly a load of crock. Chances are he is playing the field an just told you that to try an make it easier on you. I know its hard but stop calling him an text messaging him. This sounds like the famous it is isnt you its me line. Let him do what he wants an you have to start thinking of looking for someone else. Now i dont mean for you to do this over night but stop calling an text messaging him ASAP.