Although ZWJ is VERY wishy-washy about romance and relationship, he is the most kind and compassionate JY protagonist. He can forgive the various sects for forching his parents' death, willing to forgive Cheng Kun for what he had done against XX. He only wants everyone to forget revenge, repect each other and live happily together.
In terms of character, probably only the pre-Jiuying ZZR is suitable for him. Both are equally kind and compassionate before Jiuying Zhenjing reappears.