As far as commitment goes, the defintion ( of commitment) doesnt change but as adults they can handle any situations that might come up, as adults.
Despite or in spite of Church intrusions or morality issues, living together when its ONLY adults is not necessarily ( IMHO) immoral but it does tell something about the participants, like any action or inaction does.
The nature of the media story is to soften the blow or in fact eliminate it as a negative from the up coming election.
We know that many people will go along with the majority of opinion just so as not to be different and if its known that ( marriage in this case) is on the decline, that norm will or should be more acceptable.
While people can and do it all the time, seperate their private lives from their social lives, it doesnt make it any less relavant and in fact is usally seen as a negative to be one wayin private and another way in public.
Other than that I have no opinion on the subject

