So I walked in on my roommate sniffing the skeet...?

She's a girl. It was in her bedroom, and I haven't even been in their yet. I thought she was praying on her bed, but her nose was right up there! Apparently, she has a boyfriend and they were doing something yesterday while I was out. I don't know if I want to live with such a crazy...I don't even know what to say. What should I do?