Fantastic Someone and Where to Find Him

Recently I found an interesting statement in the internet. I forget from where, but it is about Fantastic Beast and Where to Find Them. It said something like this:

"What they (Newt Scamander and Leta Lestrange) had was more than friendship but less than fully romance. He doesn’t know what she liked anymore, because people change. He changes. She was a taker, and he needs a giver."

Interesting, isn't it? Does being a giver or taker matter, though? I wonder what am I then if it is what it takes to really find who I have been looking for.