During the next session have the party find, in some completely ridiculous place where it makes no sense whatsoever, a great big mostly-white cake with small statues on top that look remarkably like the two players.
Up to you whether eating the cake holds any benefit. Were it me, I'd go one of two directions:
--- if I wanted to be nice (if boring), eating the cake would provide some sort of once-per-day healing benefit, the degree of this benefit slowly waning over time as the cake got stale - e.g. eating some now gives 20 points curing, eating some tomorrow only gives 10 points, eating some the day after only gives 5, and so on
--- if I wanted to be more chaotic, eating the cake would provide a one-time random effect; intentionally beneficial to the characters of the two who just got married and maybe or maybe not beneficial to anyone else; and minor in any case. After that, the cake just becomes extra rations.