Krisi, that is certainly a fatalist point of view!
It seems to me that conversation is still open and perhaps some sort of acceptance from the SO might happen.
As long as everyone is still communicating, who knows. CeCe and her SO may come to an agreement and at least accept the CD'ing to some degree. After all, my wife was in the "Hell no!" crowd for a while and did a complete 180 degree turn on her acceptance level, so it does happen.
CeCe, keep talking, keep an open mind. Both of you may have to weigh out the importance of the relationship.