Since I loved him enough to marry him, I worked ceaselessly for the next 15 years, hoping that he would some day clean up his act if I stuck by him and supported him.
Firstly, I would like to know how the sentence reads for the natives.
Also, as to the underlined phrase, I wonder if it's OK to omit the first "him".
Is the whole "and supported him" unnecessary?
Thanks in advance.