See Breishis 24:67
When does it say that Yitzchok loved his wife Rivka
Love is a verb.
The feeling can be develop when you focus & strive to make it happen.
By serving , listening , sacrificing , appreciating ...
It is our responsibility to develop the feeling. It comes through loving actions. It can be regenerated & made to last.
Now may be a good time for a gem of Torah study.