Summary:
You broke up with your ex-girlfriend more than 6 months ago due to her occasional problematic behavior. You unfortunately left your sweater at her house and she shows up in the middle of the night to return it to you. It's pouring out and she claims she just wants to talk a little. She seems harmless, so you let her in. You regret your decision almost immediately as she makes herself right at home. She immediately notices signs of another woman in your home and demands to know who this "someone" is.
Note: There is no cheating in this. The listener's "someone" is described as a romantic interest, but the two are only friends at this stage.
Happy Halloween!
xx
Sasha