Why is my dog all of a sudden pooping on my boyfriends stuff?

My dog loves my boyfriend, but for the past week, she’s been pooping and peeing on his bath towels or his clothes if he makes the mistake of leaving them around. We just moved to a new place a month ago, and she seemed like she had settled in just fine. She’s never exhibited this behavior before with him or anyone else, so I don’t know if she’s looking for attention? And if so, from me? Or from him?. I don’t know what to do. It’s about to break up my relationship, so I need help fast!