When less is given, it is still a giving, and it is not necessarily to represent lack of passion.
Sometime the less is more.
But whenever you are spending energy into something, you would expect something in return.
and that return is
It could be a sum of dividend
It could be time
It could be a thank you note
It could be a text message
Whatever it is, people will always expect something in return and it's not a bad thing. The process is meaningful and people are bonding.
When thing is not mutual, it will fall apart.