So the fact that Jesus was tempted [externally] does not nullify my previous point about permanent abstinence during marriage being permissible when neither spouse is subject to temptation, because there I was talking about *internal* temptation. And Mary did not have any disordered desires, and Joseph likewise, presumably at least did not have disordered sexual desires.
-A8
Normal heterosexual temptations are NOT a disordered desire! That desire was put in us by God for us to procreate and as an expression of love. It is one thing to say that they gave up this "good" for something better; it's quite another thing to imply that such sexual desires are disordered.