You described very well how it is to be fond of anyone or more than one person. It fits great to Valentine's Day just a bit early but being fond is not related to one date only.
It's true what you wrote, one has to sacrifice a lot to keep such a relationship going but also invest more than one can imagine. The waste comes if it's clear it was a dead end which reminds me of a song...(asking back for all the time invested in an ex partner).
Time invested cannot be undone, you can only dwell on the memories created.
Thank you for the feedback.
Your view sheds more light to the discussion.
Thank you for your kind words. A happy day.