I kinda understand the minister's point.
If FB has been a problem for your marriage, then you can suggest deleting the account.
Although, if you really want to cheat FB isn't the only way to get the deed done.
I'm on FB. My husband isn't because he's just not a social person, in real life OR online. If he really wanted to see my account, I would let him. I don't discuss anything negative on FB and rarely mention my husband unless it's something positive. See...that's another way folks get messy. You complain about your spouse then an ex knows they have an "open door."
An old flame of mine sent me a friend request. He's married and so am I. So I just ignored it. We have absolutely NOTHING to discuss. He's messy and is just looking for an open door. Our relationship ended years AGO. We have NOTHING to discuss.