Different person, same ending? Time to study the one character in every season.

When the same ending keeps arriving with different people, it is worth looking at what stayed constant. That is not a verdict about fault, because other people make their own choices and some of what happened was genuinely theirs. It is only that the part you can examine and adjust is your own, and a pattern is where it becomes visible.

Look at what you tend to overlook early, or what you tolerate longer than you meant to. Pick one of those and decide your limit now, before the next time it turns up.