Accidentally walked in on my boyfriends brother!!

Marie • ❤️🌈👼🏽 12/19 👼🏽04/29/20 💙 05/20/2021

I accidentally walked into the bathroom, while my boyfriends brother was peeing! I feel stupid, but we have two bathrooms and I didn’t expect anybody to use the up stairs bathroom, since they are always down stairs. I didn’t see anything bad though, I just saw his shirt pulled up his back, and then I jumped back and shut the door, while my boyfriend was down stairs asking where his brother was, I didn’t say anything at alll..... His brother walked out shortly after and acted completely normal about it, and hasn’t said anything. Is this not a big deal, or should I tell my boyfriend... I’m scared he would be mad, and feel hella stupid already.