Oh my gosh! My roommate is seething. I accidentally exposed myself to his girlfriend.
So he's mad about an accident. What was it that you were trying to do?
I just wanted to take off my pants
Its understandable that your roommate could be upset about you expoosing yourself to their girlfriend. Even though you did not do it on purpose, it may be better for you to make sure you get dressed in your bedroom from now on.
That's completely fine.
You're making a great decision. I'm sure your roommate will appreciate it.