Try this line of thinking I use on FR.
Do you have the right to marry anyone? Why not more than one? No?
Do you have the right to marry your adult sibling? You don’t have to worry about birth defects because abortion is legal. No?
Then you must agree that two same sex siblings should be allowed to marry because there’s no chance of birth defect right? If no then they are hypocrites.
I will try that, thank yew.
Wasn’t Montesquieu in Romeo and Juliette?
The Capulets and the Montesquieus?