How could people communicate better in the early stages of a relationship?

(my question might not be straightforwards but I genuinly want to know not just for me but for everyone else out there who wonders this) I recently had an experience that was kinda hard for me with a girl I have gotten over it but it just felt like one misunderstanding after the other mixed with the girl not wanting to tell me if I did something that bothered her as a woman or a man how do you think people of the opposite gender could communicate better in the early stages of getting to know someone considering some people may not be very good at saying no or setting boundries?

How could people communicate better in the early stages of a relationship?
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