Not a single argument of her that really would matter. There is simply no easier way to separate a good slut from all that garbage like her than shove your boner between her cheeks and knock on her puckering sphincter. Not a single time ever asked for permission and always enjoyed it.
She sounds like my ex she would cum from anal the next day tell me she feels dirty and cant believe I would do that to her. Get over your issues and just enjoy a cock in your asshole