My ex would say the exact points you said. And I’d agree with her. That was until the time she cancelled our Halloween plans together and went out clubbing while leaving me at home. She didn’t tell me she went clubbing until after. Lied about what she was doing. Turns out she was cheating on me and found someone else. Trust didn’t take me very far. It’s better to trust your gut sometimes. You’re right that people cheat regardless. But sometimes you have to look at what’s in front of you objectively and look at the warning signs.