he doesn't want you to go back, but is not willing to help you, so what does he expect you to do and live off ?
are you aware your only allowed to spend 6 months in a yr in the uk on a visit visa.
are you living together ? from the title of your thread 'left by fiance' your not?, so probably your only hope was a Unmarried Partner visa which is one of the most difficult visas to get because you need evidence you've lived together for the last 2yrs.