He thought that he was marrying for love, but his young and pretty second wife turned out to be a catastrophy who was more interested in spending his money than in spending any time with him.
The branch of physics (specifically Astrophysics) that deals with major events that could cause devastation on a vast scale (usually known as catastrophes) and how to make sure they don't happen or at the very least try and find a way to reduce the impact of any given catastrophe.
News in Catastrophysics: A large Earth-killing asteroid is likely to hit us within the next century and there's nothing we can do about it!
When a relationship that should have got going, is hindered by a bizarre situation.
The predominant character hopefully plucks up the guts to ask the other one out to sort out problems and start again.
Also when a cyberrelationship develops as a result of all the above.
Katy and Ken's relationship became a catastrophy as it was momentarily fucked up by confusion - took a while, but catastrophy healed and things got going good...