Does a believer have the right to be joined to a harlot?

Les explains that Paul was almost crying when he asked the Corinthians, 'Don't you know that you have no right as a believer, as a child of God, as a member of the Body of Christ, to be joined to a harlot?' He clarifies this doesn't necessarily limit it to a professional prostitute, but any time we go outside God's bounds for sexuality, it becomes the same thing. Les then notes verse 17, where Paul says, 'He that is joined unto the Lord is one spirit.' He clarifies that when Paul teaches Christ is the groom and the bride, it is merely a positional thing, not a sexual thing, because that will pass off the scene. Les directs attention to Romans chapter 7, where Paul uses that marriage relationship analogy more than once, and specifically to Romans 7:4.