system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: scientifically, Why do we fall in love with people?

I asked it wrong. Why do we fall in love with a specific person. Is it something with chemicals in our brain or what?
gpt
Your spit and stank smell good to each other cause it's making baby time. 

Attractiveness is primarily impelled by finding someone with a complimentary immune system so you make baby strong like bull.