Is AUTHOR wrong in the post ? POST :   

My roommate moved into my fully furnished apartment last August. Utilities are all in my name, but the internet had been in my former roommate’s name. I asked new roommate to put the internet in her name. She was agreeable and shopped around for a provider. I told her I had a router that we could use, but by the time she picked a provider, I was out of the state on vacation. Move in day for her was while I was gone, and in the 4 days until I returned, she had set up the internet and had ended up buying a router instead of asking me where my old one was or paying to rent one from the provider. 

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Now, 5 months later, we are finally sorting out utilities, and I get a text from her asking me to pay her $30 for the router she had purchased. I asked her what would happen if/when one of us moved out, would I get my money back or would one person buy the other one out? She then said she will switch to renting a router from the provider, which would cost us an additional $13/mo, and also requested that I pay her $25, or $5/month, for my use of the router from August-Dec. I refused, as it wasn’t making sense, and asked her if we could just talk about it in person instead of over text. But she persisted. She then told me to “forget” that she ever bought the router and to pay her my half of the cost of what the rental fee would have been if we had gotten a rental router starting back in August, which would be $6.50/mo or $32.50 (more than half of what she paid for the router.) I refused again, and told her we should just talk about this in person.

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Please help me wrap my head around this and give me a reality check if needed. She and I have not had any disagreements, and up until now, have had a really laid back relationship (one of us buys toilet paper or soap and the other just buys it the next time sort of thing, even though if we are splitting hairs I have bought the majority of things in bulk from Costco.)  I just need some perspective and help reframing things before we talk again.