In all charity, I think you need to spend more time working on minding your own business. I don’t see how this is your business in any way, shape, or form. The Church is pretty clear on her teachings about this. Worst case scenario, something sinful is happening. Are you the sin police? Where does that stop? Maybe the church custodian is cohabitating. Is that your business? Or what about the lector. Maybe he lied at work yesterday. Is that your business? Be happy that this gay couple wants to have a relationship with God. They aren’t killing anyone or taking the food out of a starving child 's mouth. If you are truly worried for their souls or the soul of the musician, then pray for them (and mind your own business).