I would prefer “do{ … } while(alive);”, personally.
Or maybe “while(alive) { … }”, since it’s reasonable to assume that dead people aren’t going to call have_and_hold() and love_and_cherish() in the event that they have a wedding.

Oh, and I would think have_and_hold and love_and_cherish operate on the same data. Unless this is a snippet from a language with objects, the lack of parameters implies that they require global data, which is very often not a good idea. For instance, it would be difficult to extend the functions to be able to act on other people, which is a requirements change which should have been anticipated.