when you two are close enough, you two will end up either being
with others(your fren/family and her fren/family) most of the time,
and even you two are alone, mostly it's staying at home or keep
going to the usual places.
Try going for a tour, just the two of you. Walk at different
streets, go different places doing different things with her only.
That should ease the boredom that you two have been always doing
the same things in Singapore.