I'm not looking for anything too serious right now. I'm not ruling anything out, but I think that going into this with that expectation is more likely to disappoint. I've been separated from my ex for about five years, though we still live together (as roommates only) because we have a child together and both want to have a daily presence in his life. (Plus, it's freaking expensive to live in SF.) Things are in a constant state of change as my son grows up...you can probably see where I'm going with this, especially if you have kids of your own.
I don't know what the future holds for me but I know that I am not ready to give up on sex and all that kind of good stuff. In the last few years, I've had relations ranging in length from one night to several months. I'm not so much into the one-time thing anymore because I find that sex is more fun the better you get to know someone, and it's a real bummer to have a great time with someone and then have it hit you: well, that was that.
I don't necessarily expect monogamy (no cheaters, though, please), nor disclosure of other activities, and I can assure you that if we meet, I am not sizing you up as a potential husband or father. In exchange, I expect your honesty as it affects me and your full attention when we are together.