They may still be together, but I assure you that the dynamic of their conversations has changed dramatically since being exposed.
No longer all mystery/intrigue/romantic, they are now dealing with the HASSLES of everyone knowing, what they're going to do about it, legal stuff, etc. etc. etc. They are most likely highly AGITATED conversations and interactions.
People are not at their best when pressured and agitated; the hope here is that by applying pressure to the illicit couple, their relationship will break. It's not guaranteed, of course, but it's better than leaving them to their fun, light, romantic ways.
