Adopt tiny portion theory in relationship

Nowadays, the trend of tiny portion theory in relationships is becoming very viral on social media.
Some social media users claim that this can improve relationships with partners.
A couple named Andy and Michelle mentioned this theory for the first time on TikTok.
This is a test that shows whether your partner cares for you or not.
In this the method of test was explained. Like a girl took less food in her plate and gave more food to her boyfriend. Seeing this, the boyfriend should change his plate.
A video was also made on this in which it was told that the couple not only cares for their partner but also puts their partner ahead of themselves.
Caring simply means that you truly love your partner.
In today's times, where relationships are breaking down due to ego coming between couples, this theory is being considered as a weapon to save the relationship.