A strong - willed priestess could be a great love interest. She could be the one who interprets the gods' will and at first is hesitant about Hercules due to his half - god status, but then falls for his heroism.
A mysterious oracle could be an interesting love interest. She knows the future and warns Hercules of upcoming dangers. Over time, their meetings turn from just prophecies to expressions of deep love as they get to know each other on a more personal level.
An artist from a small village might also work well. She could be painting the deeds of Hercules on the walls of the village when he comes across her. Her creativity and unique view of the world attract Hercules, and they fall in love.