It's not polite to treat a partner with disrespect.
Steve and his girlfriend are having dinner with friends at a nice retaurant.
Steve wants to talk all about his new job promotion.
Steve tells his friends about his promotion and includes his girlfriend in the conversation.
When his girlfriend talks Steve tells her nobody wants to hear what she has to say and continues talk about his promotion.
Steve's girlfriend enjoys talking to everyone and has a nice time at dinner.
His girlfriend gets very upset and immediately starts to cry.