Legally, who knows? The laws aren't developed there yet.
Morally, who knows? The ethics regarding the status of clones aren't developed yet.
Socially, who knows? The social acceptance of clones' status haven't developed yet.
Since the first and the third answers bear little impact on whether cloning is 'wrong', we'll focus on the second one.
Since such a relationship would be mutually consensual and between competent adults, I don't see anything wrong with it.