How do you make yourself irreplaceable in a relationship?

Loving someone so much, you never want to let them go
Loving someone so much, you never want to let them go
What kind of qualities and traits do you look for with someone in a relationship? Is it their trust, their empathy, maybe their communication skills with you? After a lot of thinking lately and talking to my girlfriend about some serious matters that came up, I feel completely disposable within our relationship and I don't want to feel that way.
How do you make yourself irreplaceable in a relationship?
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