Rat owners what should i do?

dont criticize me but im thinking about getting rid of one of my rats. Hes very viscous and draws blood every.single time i open the cage if i try to handle him he bites and when i let him out to play its an all day affair of getting him back in without him squeaking squirming and taking chunks of skin. the only reason im hesitant about making this decision is because i think my other rat will be so sad. i can get anotyer new rat. if i shouldnt get rid of him what do i do please help. i also show no fear to him and dont flinch when he bites. nothing works.