Don’t tell me… I’m 36 years old. Five years ago, I bought my house—an old one in a small town here in Spain that needed a complete renovation, including the roof. After four years of very, very hard work, mostly done by myself, I managed to restructure the house. I redid everything except the exterior walls. I moved in six months ago. So, here’s what happened: last month, some workers were installing new fiber optic cables for the whole street. They climbed onto my roof without asking and drilled a hole in it to run the cables—without my consent. For the past two weeks, I’ve been battling the fiber company and insurance to get this fixed. Meanwhile, I’ve had a bucket in one of my rooms for two weeks, and the room is now full of humidity and mold. The entire ceiling, which is made of drywall, needs to be completely redone. My hair is falling out nonstop—I’ll be bald like a light bulb in a couple of months if this keeps up.

You should split groceries/electricity and all that 50/50. The house is yours so she should not pay for it unless you actually both agree she should pay a monthly rent to live in your house. That to me would be correct. I am in a different situation as you as I bought the house with my wife and even tho I spent more because I had more money available I did not ask her extra money. Also keep in mind that wife is different than girlfriend. So since wife>girlfriend I honestly thing you should get to an agreement with your girlfirend and she should actually pay something for the rent and it should not be all on you.