In dictionary, Chemistry means the complex emotional or psychological interaction between people (http://www.oxforddictionaries.com/definition/english/chemistry)
Seem the definition does not say that Chemistry is only used for romantic relationship. However, I often hear people uses "Chemistry" in romantic situation.
So, Is "Chemistry" used for any relationship or just for romantic relationship?
Can I say "I and my cofounder have a very good chemistry. We work together to grow our startup"?