Some of these 13 scripts might be suitable.  (Some won't be; I don't have a "happy ever after" filter.)

They are a mixed bunch.  From that list, I would suggest "Elephants" by Paul Bovino, but that requires a fairly elaborate set - not complex or costly, but an apartment with a theme to its decor - so it depends on whether you intend to run on a formal stage or you want your performers amongst the audience.
If it's the latter approach, then the Blind Date series might suit you.  They are two sets of themed sketches, each for two people.  These would be very easy to intersperse with serving your courses.  (Their drawback is that they tend to emphasise the comedy rather than the romance.)