when we were in London:

Once, not too long ago (last week in fact)
Joshua took me to the British Royal Academy of Music (well, it was Abi and Nathaniel, really, that took the whole family; but Joshua was there)
where we sat on a bench and ate Nigerian goat stew and Brazilian beef sandwiches;
and kissed while an opera singer practiced her scales in the background.
It was spectacular.
Even if your setup can't quite match up (I know, Nigerian goat stew is hard to beat), I highly recommend that you kiss the one you love; every day; several times a day

(and teach your children to cheer for you every time you do)