In other words, you have no problem enabling and encouraging perversion. Don’t take the Mark.
Pretty simple actually. I have a life and plenty of my own business to take care of so I don't feel compelled to stick my nose in others business and judge them. They are doing nothing illegal. They did not claim to be legally married nor did then express the desire to be legally married. They did not get into your life, you got into theirs.
Live by your own standards and be happy. If you have the right to express anti gay opinions do not be surprised when someone calls you on your bigoted attitude and points it out for all to see.