Paying "rent" to the partner... how?

For me, this question doesn’t even arise, unless your life partner doesn’t want it!
But that would be a completely different kind of discussion.

Right. He doesn’t want it. But there is no reason to discuss this fact here.
I have to figure out how to deal with it. The unanimous opinion here is that I should then only be involved with 50% interest and 50% ancillary costs. That makes sense to me.

If the bitter divorce fight is so bad that you are no longer allowed to enter the house, do you really want to live there for a few more weeks?

Again... I just said that I don’t want that at all.

Sorry if I can't answer your question directly @TE I (man) will pay off about 70% of the house, we have 3 children. One day it might be the other way around . We have 1 account. It is a joint project and if one day everyone goes separate ways, the house will also be sold. It is a stupid situation then, but it is only something "material", to be happy in life you don't need the "material", you get used to everything. Keep it simple !

Here the unanimous opinion is that I should then only be involved with 50% interest and 50% ancillary costs. That makes sense to me.

I'm curious how the consideration will be received. Let me know when you have talked about it. I would be (without judgment) interested.

when children are involved, it is a completely different matter. But that is not the case here, and in some situations a one-account solution does not make sense or is not possible.

I don't think it would come to a bitter divorce

Believe me... you can never know that in advance. And I am definitely speaking from experience...

If a variant with 50% additional costs, 50% interest, 50% reserves is on the table (it certainly has its charm!), that would mean you would constantly have to adjust the payment downwards as the repayment progresses.

For me, it's more about being able to get my stuff (furniture) out, for example. You don't just take everything with you immediately to your girlfriend. I can't imagine still happily sleeping in the marital bed. I don't think it would come to a divorce war, but, as I said, I like to play through all scenarios.

Is your boyfriend one of the few who would actually separate? It's not far-fetched that men stay forever and always (even if they look elsewhere, so rather a second woman than alone) and women plan the separation. The divorce war only happens if both parties continue living together. Anyway...

Right. He doesn't want it. But there is no reason to discuss this fact here. I have to figure out how to deal with it.

I think your answer has a completely different tone. I had already asked earlier why he absolutely wants property, why he puts you in this situation, and why the way of life is not oriented towards the "weaker" one, if you both think alike. I actually wanted to ask how you handle vacations? Do you agree on the cheaper option or does he go overseas while you stay alone in a guesthouse in the Harz? And now comes a "take it or leave it" from him, giving you the choice, but he would move into the property without you if necessary. Or did I understand that wrong? And if I understood that correctly, I wouldn’t look at him with love anymore if I were you. I would be gone already.