You’re looking at unbalanced relationships. As you say, there are plenty and some even keep going somehow. But they are not really what anyone should aim for, right? We can recognise we are not perfect and still aim high and try to improve. And of course we should probably be supporting our similarly imperfect partner do the same. Teamwork and all that.

The whole worthiness bullshit is self inflicted pain. I had a good friend exactly in that situation, thinking she didn’t deserve love because she had cheated in her previous relationship. Took her a few years and the support and love of her friends before she realised that’s not how things work at all. Ended up married with a gamer and a kid and opening a boardgames café together.