The more love I give, the more I receive.

It doesn't work as an exchange. Give in order to get and everybody can feel the invoice being written underneath.

What happens is closer to capacity. Start checking on the neighbour with the bad hip and something in you widens. You become a person who notices more, and noticing is most of what love requires.

The receiving usually comes from a different direction than the giving. Rarely from the person you gave to. Frequently from somewhere unrelated, months later, when you have forgotten you were owed anything.

Give it without watching the door. The accounting works out, just never on the timescale you expected.