Signs of true love Vs. deep mutual affection. How do you tell the difference?

How do you know when something has gone beyond deep mutual affection to a true love that will last a life time?

You can have a deep affection for a friend or even a lover, but true love is something more.

What are the things you do when truly In Love?

What would you do for your true love that you wouldn't do for someone you just care about?

What might you take as signs your partner is truly in love?

Actions?

Words?

What?
Signs of true love Vs. deep mutual affection. How do you tell the difference?
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