I’d see someplace close to 50-50. Maybe you cover a little bit more because you’ll get some of the money back when she moves out.Maybe I should say if she moves out.
No matter how you do it put it in writing. Let me state that again , put it in writing. And yes, I know there are certain people who not listening or not paying attention so I’m gonna say it a third time: put it in writing.
Do not assume anything do not use verbal agreements. You will get screwed. It’s not a matter of if it’s when. You will get screwed. write everything down. Who covers what who owes what how the bills are going to be split.
Edit: and just to make a slight addition here. When I say everything I mean everything. Including how long she gets to live there for. under what circumstances and what conditions. Who owns the apartment. Everything. I don’t know about where you live, but here once a person lives in a certain place a certain period of time they are called a the resident. trying to kick them out even if you own the place is a pain in the ass. So write everything down no exceptions.
I’d say the iPhone. A truly innovative, smart phone. When it first came out, I mean.