A woman, let's call her Susan, is a good friend of Jake and Lisa, Jake's partner. Susan knows that another friend's boyfriend, let's call him Bob, is chasing Lisa, and they have an affair. Susan really feels sorry for Jake, because she thinks Jake is very caring and a good father, but she has not told him anything about his cheating partner. What should Susan do in this case? Should she tell Jake about Lisa's affair? Comments are welcome!