How do you cope with the feeling of being manipulated or deceived in a relationship that seemed genuine at first?

Why is it so hard to resist the urge to "win" an argument, and what are some effective ways to prioritize kindness over being right?
How can staying silent during a confrontation help diffuse the situation, and are there other techniques for avoiding arguments?
Have you ever turned an awkward or confrontational moment into a positive relationship? How did you do it?
What instantly makes you feel comfortable opening up to someone you've just met?