ChatGBT helped me so much by saying this.

I was sitting here trying to wrap my head around why he would hurt me like that over someone he barely knows but this gave me a new perspective. People can only love you at whatever their capacity is. It’s not “if he could he would”, or a matter of getting it together for the “right one”. It’s a matter of him changing for himself. No amount of love, support, sex, care, etc will change that. I find peace in that.