My brother cheats on his gf
ok so about 3 weeks ago my brother was staying with me and my mother for a while, so my mom was in her bedroom and i was sitting on the couch-and his gf was laying down on the other side,(we have a sectional couch) and so i was watching TV and his gf was asleep- so i went into our computer room and he was on yahoo.com and i saw him talking to some girl and they were gonna meet, so he just made a *shh* sign and told me if his gf tawanna wakes up to say that he went to the gas station to get something to eat, so i watched him go out the door (kind of walking fast) and i just went into the living room again and saw her laying there asleep... i felt like crying but i felt so sad for her, and i just saw here laying there so peaceful while i knew her bf (my bro) was actually going to meet his other gf at shell(the gas station) i just got on my knees and watched her lay there asleep. so i got up and laid down on the other side of the couch, i don't know wat to do- he was my biological brother since i was adopted at 2 and he was raised by my real parents, but i just don't know wat to do, if i told her she could be VERY violent because she has been before with him when they have arguments, i'm afraid either way what should i do?