How you can tell you are a keeper in relationship? and why?

A keeper possesses exceptional qualities that make them an excellent partner in a relationship. A keeper does not exhibit unhealthy or toxic relationship characteristics. You can put your trust in them with anything, and they will always deliver. A keeper is also genuinely interested in you and your life.

My boyfriend says I am keeper and he is thankful for that. I actually didn't know what he's talking about until I google it! And these what I found.

How you can tell you are a keeper in relationship? and why?
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