My Brother David

I'm writing about younger brother as he is a very horny man and hasn't got a girlfriend or doesn't keep them for long, due to his roaming eye. He has fucked both of my closest girlfriends and most of the girls in our street, I even think he has fucked several of the married women in the street as well. He is very sure of himself; I think he's fucking his boss at the moment as he spends a great deal of time with her lately, she a widow of 55 and he is 27. Anytime I have a new girlfriend and he finds out; he is like a moth to a flame. I'm a lesbian and he has even tried to seduce my partner, but she is a real tomboy and prefers pussy to cock. But he keeps trying, mainly I think to annoy her as she has always told to stop and fuck off.