My bf has only been with her partner for two years and they've just bought a house together. He's a total w*nker and has been 'roughing her up' during drunken arguments -( threatening her, swearing pushing and shoving, got her round the throat a few times) from the beginning, but a few weeks ago actually ended up punching her and knocking her down and kicking her in the face. She's taken him back and seems convinced that he was so shocked and ashamed by his behaviour that he'll never do it again. Is it possible? Has anyone ever had just one really violent outburst from a partner who never did it again?