500+ words response and 300+ peer review

 All initial responses must be a minimum of 500 words to receive credit (but for this post, feel free to expand so we get to know you AND your understanding of the concepts we'll be using throughout the course). In addition to your 500-word response for each prompt, you also need to write responses of a minimum of 300 words to one of your peers responding to any aspect of their introductions and explanations of sex, love, and romance.  

(500+words) question:   Pretend that you are explaining these concepts to someone from another world, tell us about your understanding of sex, love, and romance.