亲情用英文怎么说？

natural affection
affection 比 love 更贴切一些吧

affection between family members
kinship

子亲情结 child?parent fixation
亲情的 homely
亲情固着 parental fixation
双亲情结 parental complex
转换型恋亲情结 inverted Oedipus complex

affectionate

benignity