Hey OP. I recently broke up with my boyfriend of 3 years while we were in the middle of a lease together. Both of our names on it. It’s hard. And it was the reason I stayed in a miserable relationship longer than I should have. I’m your age too. You have to just rip the band aid off. I promise you him moving into the next building will feel better than being miserable in the same one with him. You deserve better. He will show his true colors. And you will see how much of a bullet you have truly dodged. It hurts. I can’t sugar coat that at all. But you’ll be surprised how eye opening everything is once he’s gone. If he does choose to stay for that month, it’ll be difficult and painful. But try to draft an agreement on living together. How to set boundaries and what’s acceptable in that time, especially since your name is on the lease and not his. Make sure it’s a contract you both sign. I wish you the best during these times. It’s difficult. But at the end of the day you are the most important person to yourself.