The Pope is not infallible. Only the Sacraments are.You know, like “Holy Matrimony”.
The proclaimed “infallibility” of the Pope was one of the reasons for the Reformation… the Middle Ages Popes became politicians and corrupt proving to be anything BUT infallible. Also if the Pope is infallible why do we need God? The Pope whoever he may be is first and foremost a sinner in need of salvation… therefore cannot be infallible. Only God and His Word are infallible!
Obviously you fail to comprehend the dogma of Papal infallibility as explained in Pastor aeternus.
I think we need to take marriage away from the state. People want to be married in the eyes of God, they go to church and ignore the state. People want to be married in the eyes of the state, they can get a partnership agreement and the state can feel free to bless it, it won’t make it a marriage. They can call it that if they want, but they can’t make us call it that, and they can’t force our churches to support it.