Not “clearly”, unless at least one of them would be unambiguously better after the break-up than after any other possible course of action, like counseling, cheating, confronting, bluffing, learning how to influence people, etc.
I mean, if A is willing to refrain from sex with B arbitrarily long in order to get their way but not vice versa, then A probably doesn’t really want sex with B that much; so it’s likely that A would be better off with someone else with less sex drive than B, and B would be better off with someone else with more sex drive than A. (Unless they’re both fine with the idea of trading sex for favours, in which case yeah, whatever works.)
It’s rarely like that. It’s more like “it’s my way in all things I care about, or you are not getting any”.
In which case the two clearly ought to break up.
Not “clearly”, unless at least one of them would be unambiguously better after the break-up than after any other possible course of action, like counseling, cheating, confronting, bluffing, learning how to influence people, etc.
I mean, if A is willing to refrain from sex with B arbitrarily long in order to get their way but not vice versa, then A probably doesn’t really want sex with B that much; so it’s likely that A would be better off with someone else with less sex drive than B, and B would be better off with someone else with more sex drive than A. (Unless they’re both fine with the idea of trading sex for favours, in which case yeah, whatever works.)
These are certainly some of the possible alternatives, but not all of them.