Hi im 24 yr old n my bf is 35?

hi im 24 yr old n my bf is 35 but he is divorcee n a father of 2 vr in relationship from 1 yr bcoz of some problms he lost his trust on me n he thinks my love 4 him is shw of bt i luv hm so much he has given me a month to prove myself wht shld i do iwnt to marry him idnt want to loose him plz help me out..