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Good point. Everyone can have their own version of love. That said, every definition of love I've ever read says that pure love is selfless. People are free to interpret that any way they choose. I've just never heard anyone define pure love as selfish. This would seem to be a contradiction. However, we are all free to have our own definitions.

Which interpretation of love do you have which is selfless? All behavior is selfish according to most theories of neuroscience and psychology I have seen.

I don't believe love is a behavior. I believe we can behave different ways because we love, but love itself is more a noun. Do some people act selfishly because they love? Sure, but that's not love. That's them making a selfish choice because they love. I've never seen any study that states love itself is selfish.