I am a sadist. Disclaimer: I'm also not crazy or stupid and I believe in safety. I won't do anything that requires serious medical care or results in permanent injury. I am experienced enough to be safe and I read up on anything new to make sure I can do it safely. Other than that, my tastes are rather extreme. I am both physically and mentally abusive.
I'm looking for a girl who is a masochist that really wants to explore that. It would be a mutual endeavor. We would be exploring what you can take, as well as exploring what I will do. I've always had to hold back with prior subs, so I have no idea where the line is for my sadism. I'm looking for a girl that wants to help me find it. This would be a gradual process over time.
Alternatively, if we share other mutual kinks, I am perfectly capable of having fun sessions that don't include pain if that's not your cup of tea, so don't let that scare you off for something casual or short term. But for a long-term relationship, I would require a masochist.