AIO caught my boyfriend “taking a number 2” in his hand

My (26F) boyfriend (36M) of 2 yrs was in the bathroom at his apartment when I opened the door to grab my allergy meds. I didn’t think to knock and figured he’d lock the door if he needed, but when I opened it he was squatting on the floor while holding a wad of toilet paper directly under his ass. I screamed and ran out.

Five min later he called me. There was no denying what I saw so he came clean and says he does it to make less sound as opposed to crapping directly into the bowl because he’s shy and would be embarrassed if I heard him doing it. I’m freaked out still. AIO?