Expecting new people to act like old people is not serving you. You’re punishing yourself for the mistakes of others. “Oh boo hoo, you’re gonna hurt me like the last one” wasting your life away, reliving shit that doesn’t even exist anymore. Learn the ACTUAL lesson and move on. The milk spilled, you cried over it, it done dried up, ants got the scraps… MOVE ON!
For me personally, the lesson was “Don’t ignore red flags, giving endless benefit of the doubts” and “Once they show you who they are, believe them the first time”