Pushing the weirdness farther: assume tech for adjusting orientation, level of desire, and desire for exclusiveness. Either there are no side effects, or the side effects are considered to be low compared to the effects of people not getting what they want sexually.

Individual sexual parameters are adjusted to maximize sexual harmony in each person's social network (individual change is minimized-- this is presumably NP-hard), so that sexual parameter combinations change as they move through social networks.

Consent is preserved for individual encounters, but being subject to having one's parameters adjusted is mandatory.