Not so.

Potentiality is not spilled by a human will (or wills) that are un-cooperative with the will of God. 

A sterile couple can still be "open to life"

The very nature of a homosexual act is not ordered to what the bodies are capable of doing. 

Remember an infertile couple is "accidental" infertile, not "essentially" infertile.

Essences and accidents.  Keep track of these.

tks.