Dont get too caught up on 'demanding' word, what i mean is what it takes for you to be sexually satisfied in relationship and not getting it makes you feel unsatisfied or frustrated?

Sex five times a week? three? once a week? Waking you up with oral sex? Regular anal? Constantly trying new things? etc

ALSO are your requirements different for sex in relationships and casual sex? If so, how exactly?

ALSO who is more demanding one in your current (or last) relationship: you or your SO?