I18F moved in with my 20F roommate about four months ago. She’s one of my closest friends.She’s genuinely one of the sweetest people I know which is why this situation is so hard.I have no interest in renewing our lease at the end of June. Here’s why. She uses my things without my permission. Example: She’ll go into my room and take my fan and or my air mattress from my closet when I’m not home this wouldn’t be a problem if she would just asked me first.(she also never puts things back).Our ideas of clean are very different. Example: she’ll have people over multiple nights in a row leave dirty dishes and mess everywhere, then leave for the weekend and text, “Don’t feel like you need to clean anything, I’ll do it when I get back.” I’m only ever home on weekends also out first ever “rule” was to keep common areas clean. She has people over almost every night. Example: some night she’ll have three or more people over without even letting me know first. I feel used. We got this apartment because of me. I found it, contacted the landlord, handled the paperwork and got accepted because of my credit. I also bought all the furniture and handled the utilities and insurance. I gave her chances to take on some of these responsibilities but she wouldn’t contact her insurance or handle things on time so I had to do it myself. We have talked about these things and some things have improved! So this is where I might be the asshole even with improvements, I have zero intention of renewing the lease with her. She thinks I am. I agreed to move in with her while we were still in high school (her parents were supposed to move out of province) I promised I’d move in to help her and I kept this promise even after meeting my wonderful bf (I would never change a promise for a man) Her parents actually never ended up moving. When I leave I’ll be taking all my furniture and removing my name from the lease she can’t afford the full rent (I pay more than half to help her out she’s still in Cégep)or to replace the furniture I know that sounds mean but it’s the truth. As much as I wish I could stay I know if I do this situation could definitely ruin our friendship so in my opinion I believe it’s better we go our own ways. I just feel bad that I’ll be leaving her in a tough spot and my brain can’t stop thinking about all the logistics of this, she doesn’t even have a credit card to her name or savings. I know it’s not my problem but what should I do? Am I the asshole for wanting to leave?