This is definitely an issue that would vary from Church to Church. Therefore, I strongly believe this is an issue that should be addressed the particular pastor of that church. There is no one answer that would address every Church, because different churches struggle with different things. Just like some nineteen year olds are mature enough to date, and some forty years olds are not at all ready to date!
Some churches struggle with sexual sin in the group. This was the case with the Corinthian church. Some churches struggle with a gossiping spirit, and the people aren't strong enough to challenge each other not to gossip. In these cases, dating in the church can lead to either fornication, or good people's reputations being ruined as people accuse them of fornicating. Some Churches are full of people who have been divorced and have not been healed from the divorce . . . . therefore they are either desperate to marry again or very negative about the whole issue of marriage.
As a single Bible teacher, I am VERY careful if I choose to date someone in the Church. And no, I would never date anyone whom I didn't think a future with God and them could be a possibility. Even so, when you are single and saved, people LOVE to dig in your business . . . .ESPECIALLY if you are in visible ministry, because the Bible says not to let our good be evil spoken of.
Another problem is when one person has gone through extensive Bible training on how to date as a Christian, and another person has not. This is why, as a counselor, you should try to avoid counseling only one person in the realtionship. So again, this is an issue that pastors should address because they know where their people are spiritually and how much they know.
So my two cents is that this should definitely be addressed to the pastor of the Church.
Be Blessed!