[smeyer]

Your described feature sounds like something that isn't too hard to find. In okcupid people can specify a subset of something like friends, long term dating, short term dating, and casual sex, then filter on what others are looking for.

[sarciszewski]

I don't mean what they'll lie and say they want, I mean detect what they actually want. It's not nearly as easy. ;)

Maybe it's just Orlando, but most of the gay folks I've talked to were very NOT monogamous, but many pretended to be for the sake of managing perceptions and increasing their chances of being contacted.