It's immoral to deceive or lie to another person.
Chad is meeting with a woman he found on the Tinder dating app.
Chad wants the woman to like him.
Chad is completely honest with the woman and acts like himself.
Chad tells the woman that he's a doctor even though he's not one.
The woman likes how honest Chad is with her and wants to spend more time with him.
The women eventually finds out and never talks to Chad again.