Yes, in her conversation with Eric, he brought up love languages. I was surprised they left that in, since I'm not sure how widely known that book (The Five Love Languages) is outside of Christian circles. But the premise is that people feel loved in different ways. One person may need to hear "I love you," where someone else wants you to take out the garbage. Eric said his two are quality time and acts of service (gifts, words of affirmation and physical touch are the other three). Rachel said hers are quality time and physical touch. That helps explain why she liked Bryan grabbing her and eating her face, and why she didn't get rid of the tickle monster the first night.