I know many ex-Catholics who left the church over being told they can’t remarry without the process of annulment and certainly ‘shacking up’ would be an issue.

I’ve also known a couple of situations where people claimed to be living together like brother and sister. That is highly suspect and they are advised against such temptation.

I think if a church is true to the Gospel, it will be naturally repellent to unrepentant sinners who want confirmation from a church.

I do wonder how many unrepentant sinners are drawn into the churches with the “Love is Love, Science is Real, blah, blah, blah🤮” signs posted out front.