<human>: I was up at 4:30 this morning trying to find out if I'd have to go in to work today because of the weather. After finding out I could go back to sleep, I did just that, and had some really bizarre dreams that left me exhausted and out of it when I finally decided to get out of bed. I stumbled into the bathroom and grabbed what I thought was my toothbrush and brushed my teeth without looking at it. It felt weird, like, newer or with firmer bristles, but stupid me didn't even stop to investigate. It was only once I had brushed, thoroughly scrubbed my tongue, rinsed, and placed the toothbrush back in its little hole that I realized it was not mine, but my brother's. 

I immediately felt the urge to gag and so spent the next 5 or so minutes dry heaving until I realized the effort was futile. And then, I don't know what possessed me to do this, but I just left the toothbrush there in the bathroom as if nothing had happened. I figured I would admit my disgusting mistake to my brother when he got home from work, so I went about my day. Just a few minutes ago, I heard someone in the bathroom. I thought I was home alone. It turns out my brother doesn't have to go in to work for another 2 hours and just woke up, took a shower and *brushed his teeth*. 

I don't know if I should tell him now that the damage has already been done, or just try to let my stomach settle from the thought and quietly allow this mishap to fade away.

Condense the text into a few key points
<bot>: used brother's toothbrush and subsequently tried to make myself puke, then he used the toothbrush before I got a chance to tell him and we have now basically made out.