Approaches to solutions after unmarried separation

I personally don't think the option of renting out (with a fixed term) is bad. If a steady partner wants to move in within 2-3 years, it's relatively easy to arrange.

Don't worry, tax is only on the profit remaining after deducting all costs. But if you don't think so yourself, you should have lived there yourself.

Does it matter how significant his share of the residence is?

Also, at some point, a partner might come along and move in...

I think it has a bit of a connotation like "and for the children, I would also like a mom again." "I'm marrying a house"

I don't think a later sale is bad at all. No matter the way. After all, the outstanding debt decreases. Therefore the [VE]. Additionally, prices could continue to rise. If things keep going like this in the real estate sector, it is possible that you can really achieve good prices there. The path to get there is, of course, difficult.

In which federal state is the house located?

Does it matter how significant his share of the residency is?

I think it has a bit of a flavor like "and for the children, I'd also like to have a mommy again." "I'm marrying a house"

Not me

Important though: You need someone on site who takes care of the house, does cleaning, etc., a kind of "good fairy" (yes, there are male fairies too!), without that it definitely won't work!

The good fairy lives in the house. The OP doesn't want to move out...